placeholder problem RSS

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  surfarajist

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  10 Posts

  placeholder problem

  Jun 30, 2012 03:49 PM|LINK

  i have one aspx page in which i have taken textbox , dropdownlist and placeholder.  In dropdownlist  i have listitem like- textbox,multitextbox,checkbox etc. when i select anyone it show in place holder.  now i want to save particular contro data in database at run time and also want to show this control in repeater 

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  Catherine Sh...

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  23373 Points

  2490 Posts

  Microsoft

  Re: placeholder problem

  Jul 02, 2012 09:21 AM|LINK

  Hi,

  surfarajist

  i have one aspx page in which i have taken textbox , dropdownlist and placeholder.  In dropdownlist  i have listitem like- textbox,multitextbox,checkbox etc. when i select anyone it show in place holder. 

  For your description, you want to add the control in the place holder when you select the dropdownlist. Please check the demo below:

  In the .aspx

  <asp:DropDownList ID="DropDownList1" runat="server"  AutoPostBack="true"
              onselectedindexchanged="DropDownList1_SelectedIndexChanged">
              <asp:ListItem>textbox</asp:ListItem>
              <asp:ListItem>multitextbox</asp:ListItem>
              <asp:ListItem>checkbox </asp:ListItem>
          </asp:DropDownList>
        <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>

  In the code behind:

   protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
      {
         if(DropDownList1.SelectedValue=="textbox")
         {
             TextBox textboxtest = new TextBox();
             textboxtest.Text = "textboxtest";
             textboxtest.ID = "textboxid";
             PlaceHolder1.Controls.Add(textboxtest);
         }
         else if( DropDownList1.SelectedValue== "multitextbox")
         {
             TextBox multitextbox = new TextBox();
             multitextbox.Text = "multitextbox";
             multitextbox.ID = "multitextboxid";
             multitextbox.TextMode = TextBoxMode.MultiLine; 
             PlaceHolder1.Controls.Add(multitextbox);
         }
         else if (DropDownList1.SelectedValue == "checkbox")
         {
             CheckBox CheckBoxtest = new CheckBox();
             CheckBoxtest.Text = "test";
             CheckBoxtest.ID = "textboxid";
             CheckBoxtest.Checked = true;
             PlaceHolder1.Controls.Add(CheckBoxtest);
         }
      }

  
  These controls are dynamically created and added to the placeholder. Thus, you need to save them in the viewstate.  Otherwise, they will get lost when you do a postback.

  surfarajist

  now i want to save particular contro data in database at run time and also want to show this control in repeater 

  For more information about how to add the control in the repeater, please check the link below:

  http://www.ezineasp.net/post/ASP-Net-Repeater-dynamically-using-C-sharp-code.aspx

  Best wishes,

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  • Marked as answer by Catherine Shan - MSFT on Jul 09, 2012 05:21 AM