Checkbox not firing when unchecking using OnCheckedChanged RSS

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  Icemania

  Member

  100 Points

  148 Posts

  Checkbox not firing when unchecking using OnCheckedChanged

  Aug 27, 2008 02:57 PM|LINK

  New to this so please bear with me.

  Got a FormView which when you first open is in readonly mode.  There is a button to click which puts you in Edit mode where I can make changes and save back to the database, this is all working great.

  I have a Checkbox and a textbox, when I untick the checkbox I need it to clear my textbox and it's this bit that is not working.  If I tick the box I can get it to do something, just not when I untick and it is doing my head in.  Here is the code for the main page and the code behind.  There are other fields but to make it easier just stripped it down to the problem area.

  <asp:FormView ID="fvMain" runat="server" DataSourceID="sdsMain" DefaultMode="ReadOnly">
  <EditItemTemplate>
  <div><label>Archived:</label><asp:CheckBox ID="dbArchived" runat="server" Checked='<%# Bind("dbArchived") %>' OnCheckedChanged="dbArchived_OnCheckedChanged" AutoPostBack="true" />
  <asp:TextBox ID="dbDateArchived" runat="server" Columns="12" MaxLength="12" Text='<%# Bind("dbDateArchived") %>'></asp:TextBox></div>
  </EditItemTemplate>
  <EmptyDataTemplate>
  <p>No data found</p>
  </EmptyDataTemplate>
  </asp:FormView>

   

  Just put in a dummy line of code the response.write bit, which works when ticking the box, but again not on the untick [:(], once I get it to display both of these then I can handle the textbox no problem.

      protected void dbArchived_OnCheckedChanged(object sender,EventArgs e) {
          Response.Write(sender.ToString());
          if (((CheckBox)sender).Checked) {
              Response.Write("Checked");
          } else {
              Response.Write("UnChecked");
          }
      }
   

  Thanks for any help provided

  • Moved by ecbruck on Aug 27, 2008 03:09 PM
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  smcoxon

  Contributor

  5455 Points

  948 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 27, 2008 06:32 PM|LINK

  Hi, I dont think there is anything wrong with your code behind. I think the issue probably is because you have bound your checkbox to a field in your database within the aspx markup and have the AutoPostBack property set to true. Therefore, when you 'uncheck' the checkbox, the code is correctly executed however, the checkbox posts back, which causes the page to reload, which rebinds the checkbox to the database value again and also clears the response.write text from the page. You can follow this through if you put a debug 'Break' on the 'If' statement and then step through line by line.

  Regards
  Smcoxon
  
  No Gem is ever polished without some friction.
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  Icemania

  Member

  100 Points

  148 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 07:38 AM|LINK

  Hi, I thought it may have had something to do with being bound to the database, however it's not the case.  I had removed any code binding the field to the database and it made no difference, so I am at a loss.  If it works when ticking the box, it should work, when unticking [:(]

  I just tried something, I set the checkbox to be checked=true and when I untick it, the code fired this time, but now it doesn't fire when ticking.  It seems the code is only running when I set it back to it orginal setting ?

  • Edited by Icemania on Aug 28, 2008 07:40 AM
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  ramireddyind...

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  31358 Points

  4579 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 08:07 AM|LINK

  when you uncheck the checkbox, is the event firing or not?

  by setting a break point, we can find easily whether event is firing or not.

  if the event is firing? check into what logic, execution goes, ?

  post your code. so that we can understand what is happening?

  Give a man a fish and you feed him for a day. Teach a man to fish and you feed him forever.
  
• • Reply
  

  Icemania

  Member

  100 Points

  148 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 08:15 AM|LINK

  Just tried that and no the code is not firing at all when unchecking.  Right here is all the code for the page and code behind.

  <%@ Page Language="C#" MasterPageFile="~/Admin.master" AutoEventWireup="true" CodeFile="ideaDetails.aspx.cs" Inherits="admin_ideas_ideaDetails" %>
  <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
  <asp:Content ID="Content1" ContentPlaceHolderID="cphContent" Runat="Server">
  <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
  <div id="conContent">
      <div class="block">
          <h2>Ideas details <asp:Literal ID="litMode" runat="server"></asp:Literal></h2>
          <fieldset id="subNav"><a href="Default.aspx?uid=<%=uid %>">Return to list</a></fieldset>
          <asp:Panel ID="pnlStatus" runat="server"><asp:Literal ID="litStatus" runat="server"></asp:Literal>
          <asp:ValidationSummary ID="vsMain" runat="server" DisplayMode="BulletList" ShowSummary="true" EnableViewState="False" CssClass="st_error" />
          </asp:Panel>
          <asp:SqlDataSource ID="sdsMain" runat="server" ConnectionString="<%$ ConnectionStrings:NHSIPv2 %>"
              SelectCommand="usp_IdeaUpdates" SelectCommandType="StoredProcedure"
              UpdateCommand="usp_IdeaUpdates" UpdateCommandType="StoredProcedure" OnUpdated="sdsMain_Updated">
              <SelectParameters>
                  <asp:Parameter DefaultValue="0" Name="type" Type="Int32" />
                  <asp:QueryStringParameter DefaultValue="" Name="dbID" QueryStringField="tag" Type="Int32" />
              </SelectParameters>
              <UpdateParameters>
                  <asp:Parameter DefaultValue="2" Name="type" Type="Int32" />
                  <asp:QueryStringParameter Name="dbID" QueryStringField="tag" Type="int32" />
                  <asp:FormParameter FormField="dbTitle" Name="dbTitle" Type="string" />
                  <asp:FormParameter FormField="dbArchived" Name="dbArchived" Type="Boolean" DefaultValue="False" />
                  <asp:FormParameter FormField="dbPaperFile" Name="dbPaperFile" Type="Boolean" DefaultValue="False" />
                  <asp:FormParameter FormField="dbTransfer" Name="dbTransfer" Type="Boolean" DefaultValue="False" />
                  <asp:Parameter Direction="Output" Name="mess" Type="string" Size="100" />
              </UpdateParameters>
          </asp:SqlDataSource>
          
  
          <asp:FormView ID="fvMain" runat="server" DataSourceID="sdsMain"
              DefaultMode="ReadOnly" >
              <ItemTemplate>
                  <fieldset><legend>Entry ID</legend>
                  <div><label>ID Number:</label><%# Eval("ID") %></div>
                  <div><label>Added:</label><%# Eval("dbAdded") %></div>
                  <div><label>Last amended:</label><%# Eval("dbLastAmended") %></div>
                  </fieldset>
                  <fieldset><legend>Inventor details</legend>
                  <div><label>Inventor:</label><%# Eval("inName") %></div>
                  <div><label>Telephone:</label><%# Eval("inTel") %></div>
                  <div><label>Email:</label><asp:HyperLink ID="hlEmail" runat="server" NavigateUrl='<%# Eval("inEmail")==DBNull.Value ? "" : Eval("inEmail","mailto:{0}") %>' Text='<%# Eval("inEmail")==DBNull.Value ? "" : Eval("inEmail") %>'></asp:HyperLink></div>
                  </fieldset>
                  <fieldset><legend>Entry details</legend>
                  <div><label>Title:</label><%# Eval("dbTitle") %></div>
                  <div><label>Approved:</label><%# Convert.ToBoolean(Eval("dbApproved"))==true ? "Approved" : "No" %></div>
                  <div><label>Archived:</label><%# Convert.ToBoolean(Eval("dbArchived"))==true ? "Yes" : "No" %> <%# Eval("dbDateArchived")!=DBNull.Value ? "("+Eval("dbDateArchived")+")" : ""  %>
                  </div>
                  <div><label>Paper file:</label><%# Convert.ToBoolean(Eval("dbPaperFile"))==true ? "Yes" : "No" %></div>
                  <div><label>Licenced/transfered:</label><%# Convert.ToBoolean(Eval("dbTransfer"))==true ? "Yes" : "No" %> <%# Eval("dbTransferDate")!=DBNull.Value ? "("+Eval("dbTransferDate")+")" : ""  %></div>
                  <div><label>Notes:</label><span class="lightBorder"><%# Eval("dbNotes") %></span></div>
                  <div><label>Additional notes:</label><span class="lightBorder"><%# Eval("dbRejectReason") %></span></div>
                  <div><label>Admin user:</label><%# Eval("dbAdminUser") %></div>
                  <div><label>Assigned owner:</label><%# Eval("dbOwner") %></div>
                  </fieldset>
                  <fieldset><asp:LinkButton ID="btnEditMode" runat="server" Text="Edit details" OnClick="EditDetails" CssClass="Standard" /></fieldset>
              </ItemTemplate>
              
  
              <EditItemTemplate>
                  <fieldset><legend>Entry ID</legend>
                  <div><label>ID Number:</label><%# Eval("ID") %></div>
                  <div><label>Added:</label><%# Eval("dbAdded") %></div>
                  <div><label>Last amended:</label><%# Eval("dbLastAmended") %></div>
                  </fieldset>
                  <fieldset><legend>Inventor details</legend>
                  <div><label>Inventor:</label><%# Eval("inName") %></div>
                  <div><label>Telephone:</label><%# Eval("inTel") %></div>
                  <div><label>Email:</label><%# Eval("inEmail") %></div>
                  </fieldset>
                  <fieldset><legend>Entry details</legend>
                  <div><label>Title:</label><asp:TextBox ID="dbTitle" runat="server" text='<%# Bind("dbTitle") %>' Columns="50" MaxLength="200" ></asp:TextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="dbTitle" Display="Dynamic" SetFocusOnError="True" ErrorMessage="Enter a title"></asp:RequiredFieldValidator></div>
                  <div><label>Approved:</label><%# Convert.ToBoolean(Eval("dbApproved")) == true ? "Approved" : "No"%></div>
                  <div><label>Archived:</label><asp:CheckBox ID="dbArchived" runat="server" Checked='<%# Bind("dbArchived") %>' OnCheckedChanged="dbArchived_OnCheckedChanged" AutoPostBack="true" />
                  <asp:TextBox ID="dbDateArchived" runat="server" Columns="12" MaxLength="12" Text='<%# Bind("dbDateArchived") %>'></asp:TextBox> <asp:ImageButton ID="imgCal" runat="server" ImageUrl="~/_sitefiles/_images/calender.gif" AlternateText="Display calendar" />
                  <cc1:CalendarExtender ID="calDateArchived" runat="server" TargetControlID="dbDateArchived"
                  PopupButtonID="imgCal" Format="dd/MMM/yyyy" CssClass="MyCalendar" /></div>
                  <div><label>Paper file:</label><asp:CheckBox ID="dbPaperFile" runat="server" Checked='<%# Bind("dbPaperFile") %>' /></div>
                  <div><label>Licenced/transfered:</label><asp:CheckBox ID="dbTransfer" runat="server" Checked='<%# Bind("dbTransfer") %>' />
                  <asp:TextBox ID="dbTransferDate" runat="server" Columns="12" MaxLength="12" Text='<%# Bind("dbTransferDate") %>'></asp:TextBox> <asp:ImageButton ID="imgCal1" runat="server" ImageUrl="~/_sitefiles/_images/calender.gif" AlternateText="Display calendar" />
                  <cc1:CalendarExtender ID="calTransferDate" runat="server" TargetControlID="dbTransferDate"
                  PopupButtonID="imgCal1" Format="dd/MMM/yyyy" CssClass="MyCalendar" /></div>
                  <div><label>Notes:</label><span class="lightBorder"><%# Eval("dbNotes") %></span></div>
                  <div><label>Additional notes:</label><span class="lightBorder"><%# Eval("dbRejectReason") %></span></div>
                  <div><label>Admin user:</label><%# Eval("dbAdminUser") %></div>
                  <div><label>Assigned owner:</label><%# Eval("dbOwner") %></div>
                  </fieldset>
                  <fieldset><asp:LinkButton ID="btnUpdate" runat="server" CausesValidation="True" CommandName="Update" Text="Update" CssClass="Standard"></asp:LinkButton>
                  <asp:LinkButton ID="btnCancel" runat="server" Text="Cancel edit" OnClick="CancelEdit" CssClass="Standard" /></fieldset>
              </EditItemTemplate>
              
  
              <EmptyDataTemplate>
                  <p>No data found</p>
              </EmptyDataTemplate>
          </asp:FormView>
      </div>
  </div>
  
  
  </asp:Content>

   

  using System;
  using System.Data;
  using System.Configuration;
  using System.Collections;
  using System.Web;
  using System.Web.Security;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  using System.Web.UI.WebControls.WebParts;
  using System.Web.UI.HtmlControls;
  
  public partial class admin_ideas_ideaDetails : System.Web.UI.Page {
      public string uid;
  
      protected void Page_Load(object sender, EventArgs e) {
          if (Request.QueryString["tag"] != null) {
              string url = Request.QueryString["tag"].ToString();
          }
          else {
              Response.Redirect("Default.aspx");
          }
  
          if (Request.QueryString["uid"] != null ){
              uid = Request.QueryString["uid"].ToString();
          }
      }
  
      /// <summary>
      /// Sets the FormView to edit mode
      /// </summary>
      /// <param name="sender"></param>
      /// <param name="e"></param>
      protected void EditDetails(object sender, EventArgs e) {
          fvMain.ChangeMode(FormViewMode.Edit);
          litMode.Text = " - Edit mode";
      }
  
      /// <summary>
      /// Set the FormView to readonly mode
      /// </summary>
      /// <param name="sender"></param>
      /// <param name="e"></param>
      protected void CancelEdit(object sender, EventArgs e) {
          fvMain.ChangeMode(FormViewMode.ReadOnly);
          litMode.Text = "";
          litStatus.Text = "Edit mode cancelled";
          pnlStatus.CssClass = "st_info";
      }
  
      /// <summary>
      /// Displays the status panel after record has been updated
      /// </summary>
      /// <param name="sender"></param>
      /// <param name="e"></param>
      protected void sdsMain_Updated(object sender, SqlDataSourceStatusEventArgs e) {
          //Get the @mess value returned from the Stored Procedure
          string retValue = e.Command.Parameters["@mess"].Value.ToString();
  
          pnlStatus.CssClass = "st_ok";
          litStatus.Text = "Details updated (" + retValue + ")";
      }
  
      protected void dbArchived_OnCheckedChanged(object sender, EventArgs e) {
          /*TextBox dbDateArchived = (TextBox) fvMain.FindControl("dbDateArchived");
          if (dbDateArchived != null) {
              Response.Write("Found it");
              if (!((CheckBox) sender).Checked) {
                  Response.Write("Reset");
                  dbDateArchived.Text = "";
              }
          }*/
          Response.Write(sender.ToString());
          if (((CheckBox) sender).Checked) {
              Response.Write("Checked");
          }
          else {
              Response.Write("UnChecked");
          }
      }
  }
  

   
• • Reply
  

  ramireddyind...

  All-Star

  31358 Points

  4579 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 08:28 AM|LINK

  can you post your database tables script and stored procedures?

  Give a man a fish and you feed him for a day. Teach a man to fish and you feed him forever.
  
  • Edited by ramireddyindia on Aug 28, 2008 08:29 AM
• • Reply
  

  Icemania

  Member

  100 Points

  148 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 08:39 AM|LINK

  Sure, table scripts:

  /****** Object:  Table [dbo].[appBase_Stage1]    Script Date: 08/28/2008 09:33:11 ******/
  SET ANSI_NULLS ON
  GO
  SET QUOTED_IDENTIFIER ON
  GO
  SET ANSI_PADDING ON
  GO
  CREATE TABLE [dbo].[appBase_Stage1](
  [dbID] [int] IDENTITY(1,1) NOT NULL,
  [dbAdded] [int] NOT NULL,
  [dbTitle] [dbo].[VarC_200] NULL,
  [dbApproved] [bit] NOT NULL,
  [dbRejected] [bit] NOT NULL,
  [dbArchived] [bit] NOT NULL,
  [dbInventorLinkID] [int] NULL,
  [dbLastAmended] [int] NULL,
  [dbGeneratedCode] [varchar](10) NULL,
  [dbRejectReason] [varchar](500) NULL,
  [dbDateArchived] [int] NULL,
  [dbAdminUser] [int] NULL,
  [dbEnquiry] [bit] NULL,
  [dbEnquiryType] [int] NULL,
  [dbConvertDate] [int] NULL,
  [dbOwner] [int] NULL,
  [dbType] [varchar](3) NULL CONSTRAINT [DF_tblAppPartA_pAType]  DEFAULT ('_'),
  [dbCompetition] [bit] NULL CONSTRAINT [DF_tblAppPartA_pACompetition]  DEFAULT ((0)),
  [dbLegal] [bit] NULL,
  [dbPaperFile] [bit] NULL,
  [dbTransfer] [bit] NULL,
  [dbTransferDate] [int] NULL,
  [dbHearAboutUs] [varchar](6) NULL,
  [dbHearAboutOther] [dbo].[VarC_100] NULL,
  [dbNotes] [varchar](max) NULL,
  CONSTRAINT [PK_tblAppPartA] PRIMARY KEY CLUSTERED
  (
  [dbID] ASC
  )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON, FILLFACTOR = 90) ON [PRIMARY]
  ) ON [PRIMARY]
  
  GO
  SET ANSI_PADDING OFF
  GO
  EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'Previous: tblAppPartA
  Used to hold the base information about an Idea' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'appBase_Stage1'
  
  /****** Object:  Table [dbo].[appSystemAdminUsers]    Script Date: 08/28/2008 09:36:42 ******/
  SET ANSI_NULLS ON
  GO
  SET QUOTED_IDENTIFIER ON
  GO
  SET ANSI_PADDING ON
  GO
  CREATE TABLE [dbo].[appSystemAdminUsers](
  [adID] [int] IDENTITY(1,1) NOT NULL,
  [adName] [varchar](30) NOT NULL,
  [adInitials] [varchar](4) NULL,
  [adEmail] [varchar](120) NULL,
  [adSuspend] [bit] NOT NULL,
  CONSTRAINT [PK_tblAppAdminUsers] PRIMARY KEY CLUSTERED
  (
  [adID] ASC
  )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON, FILLFACTOR = 90) ON [PRIMARY]
  ) ON [PRIMARY]
  
  GO
  SET ANSI_PADDING OFF
  
  
  /****** Object:  Table [dbo].[appSystemTrusts]    Script Date: 08/28/2008 09:37:06 ******/
  SET ANSI_NULLS ON
  GO
  SET QUOTED_IDENTIFIER ON
  GO
  SET ANSI_PADDING ON
  GO
  CREATE TABLE [dbo].[appSystemTrusts](
  [trustID] [int] IDENTITY(1,1) NOT NULL,
  [trustName] [varchar](250) NOT NULL,
  CONSTRAINT [PK_tblAppTrusts] PRIMARY KEY CLUSTERED
  (
  [trustID] ASC
  )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON, FILLFACTOR = 90) ON [PRIMARY]
  ) ON [PRIMARY]
  
  GO
  SET ANSI_PADDING OFF

   Stored procedure:

  USE [NHSIPv2]
  GO
  /****** Object:  StoredProcedure [dbo].[usp_IdeaUpdates]    Script Date: 08/28/2008 09:28:53 ******/
  SET ANSI_NULLS ON
  GO
  SET QUOTED_IDENTIFIER ON
  GO
  -- ================================================
  -- Author: Me
  
  -- Create date: 26/08/2008
  -- Description: Handles update and inserts on the
  -- appBase_Stage1 table
  -- ================================================
  
  ALTER PROCEDURE [dbo].[usp_IdeaUpdates]
  	-- Add the parameters for the stored procedure here
  @type int=0, --0 = Select | 1 = Insert | 2 = Update | 3 = Delete
  @dbID int=null,
  	@dbTitle varchar(200)=null,
  	@dbArchived bit=null,
  	@dbPaperFile bit=null,
  	@dbTransfer bit=null,
  	@dbDateArchived DateTime=null,
  	@dbTransferDate DateTime=null,
  	@mess varchar(100)=null OUTPUT
  
  
  AS
  BEGIN
  	-- SET NOCOUNT ON added to prevent extra result sets from
  	-- interfering with SELECT statements.
  SET NOCOUNT ON;
  
  
  /*==================================================
  	SELECT
  ==================================================*/
  	IF @type=0
  	BEGIN
  		SELECT dbType+CONVERT(varchar(8),dbID) + CASE WHEN dbCompetition=0 THEN 'Y' ELSE 'N' END AS ID,
  		dbTitle,dbNotes,dbRejectReason,dbo.udfDateFormat(dbAdded,1) AS dbAdded,
  		dbo.udfDateFormat(dbLastAmended,1) AS dbLastAmended,
  		dbApproved,dbArchived,dbPaperFile,dbTransfer
  		,(SELECT adName FROM appSystemAdminUsers WHERE adID=dbAdminUser) AS dbAdminUser
  		,(SELECT adName FROM appSystemAdminUsers WHERE adID=dbOwner) AS dbOwner
  		,inName,inTel,inEmail,trustName,dbo.udfDateFormat(dbDateArchived,1) AS dbDateArchived
  		,dbo.udfDateFormat(dbTransferDate,1) AS dbTransferDate
  		FROM appBase_Stage1
  		LEFT OUTER JOIN appInventors ON inID=dbInventorLinkID
  		LEFT OUTER JOIN appSystemTrusts ON trustID=inTrust
  		WHERE dbID=@dbID
  	END
  	
  
  /*==================================================
  	UPDATE
  ==================================================*/
  	IF @type=2
  	BEGIN
  		BEGIN TRAN
  			UPDATE appBase_Stage1 SET
  			dbTitle=@dbTitle,
  			dbArchived=@dbArchived,
  			dbPaperFile=@dbPaperFile,
  			dbTransfer=@dbTransfer,
  			dbDateArchived=null,
  			dbTransferDate=null
  			WHERE dbID=@dbID
  
  
  			IF @@error<>0
  			BEGIN
  				ROLLBACK
  				SELECT @mess='ERROR: Update failed'
  				RETURN
  			END
  	
  
  		COMMIT
  			BEGIN
  				--SELECT @mess='Updated record ID:'+CAST(@dbID AS varchar(5))
  SELECT @mess='Updated record ID:'+CAST(@dbID AS varchar(5))+' | '+CAST(@dbDateArchived AS varchar(20))
  			END
  	END
  
  
  END

   
• • Reply
  

  ramireddyind...

  All-Star

  31358 Points

  4579 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 09:06 AM|LINK

  sorry, i again failed to execute your page, even  data didn't  retriving. it said there is no table "appforums".  so i came up with an alternative way.

  here what you wants to do is when user unchecked checkbox, you wants to erase the contents of textbox.

  so then follow this process

  implement prerender event and write code like below

   

  protected void fvMain_PreRender(object sender, EventArgs e)
      {
          if (fvMain.DefaultMode == FormViewMode.Edit)
          {
              CheckBox dbArchived = (CheckBox)fvMain.FindControl("dbArchived");
              TextBox txtDate = (TextBox)fvMain.FindControl("dbDateArchived");
              string str = "javascript:return Validate('" + txtDate.ClientID + "')";
              dbArchived.Attributes.Add("onclick", str);
          }
      }

  Now in javascript, write the below code, there i put some alert statements. when they come click ok, when functionality is achieved, remove those alerts

  <script type="text/javascript">
  function Validate(txtcntrl)
  {var chkcntrlname = event.srcElement.id;
  alert(txtcntrl);
  alert(chkcntrlname);
  alert(document.getElementById(chkcntrlname)); 
  alert(document.getElementById(txtcntrl)); 
  alert(document.getElementById(chkcntrlname).checked); 
  if(document.getElementById(chkcntrlname).checked == false
  document.getElementById(txtcntrl).value = "";
   
   
  }
  </script>
   
  if the above not works, tell me whether javascript event is not firing or what is the outputs of those alert statements.

   

   

  Give a man a fish and you feed him for a day. Teach a man to fish and you feed him forever.
  
• • Reply
  

  Ganesh@Nilgr...

  Contributor

  6074 Points

  2354 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 09:36 AM|LINK

  Icemania

  I have a Checkbox and a textbox, when I untick the checkbox I need it to clear my textbox and it's this bit that is not working.  If I tick the box I can get it to do something, just not when I untick and it is doing my head in.  Here is the code for the main page and the code behind.  There are other fields but to make it easier just stripped it down to the problem area.

  I just tried myself with a sample code. i did it in the following way.

  protected void InTheatersCheckBox_CheckedChanged(object sender, EventArgs e)
  {if (FormView1.CurrentMode == FormViewMode.Edit)
  {CheckBox chk = (CheckBox)FormView1.Row.Cells[0].FindControl("InTheatersCheckBox");if (chk.Checked == true)
  {
  TextBox tb = (TextBox)FormView1.Row.Cells[0].FindControl("TitleTextBox");
  Session["title"] = tb.Text;tb.Text = "";
  }
  else
  {TextBox tb = (TextBox)FormView1.Row.Cells[0].FindControl("TitleTextBox");tb.Text = (string)Session["title"];
  }
  }
  }
   
  If it is checked i just clear the textbox value to empty.string. but i store the value in session state to revert back the value when it is unchecked.
   
  May be this could help u.
   

  Jai Ganesh. J, IDC, India
  Please Mark As Answer If my reply helped you.
  
  
• • Reply
  

  Icemania

  Member

  100 Points

  148 Posts

  Re: Checkbox not firing when unchecking using OnCheckedChanged

  Aug 28, 2008 01:35 PM|LINK

  Finally sorted out the problem.  In the master page I had the EnableViewState set to False, but in the acutal page I had this set to true, so I would have thought it would override the master page setting.  Well apparently it doesn't, once I set the viewstate to true in the master page it started working.

  Could anyone tell me if this is right I thought you could override the master page setting.

  Anyway thanks for those that tried to help much appreciated.

  • Marked as answer by Samu Zhang - MSFT on Sep 02, 2008 09:31 AM