Hi guys, I've create a template on aspxgrid using checkbox using checkbox field. But my problem is, how will I access the checkbox property? I've created this code:

CheckBox chk = GridView1.Rows[x].FindControl("CheckBox1") as CheckBox;

//my logic here

you can use javascript for this.

var itemIndex = 0;

else

By the way, I've converted my checkboxfield into a templatefield because it has no connection with the database. And here is my source code:

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True">

<Columns>

<asp:TemplateField>

<ItemTemplate>

<asp:CheckBox ID="CheckBox1" runat="server" />

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

Hi satesth, thanks for that, but I really need a server side code for this because I am using a different framework. Thank you very much!

r u marked checkbox as AutoPostback='true'?

but it will do the postback when u check any check box..

to avoid it u can use AJAX controls.. just put ur grid in UpdatePanel, it will do postback , but not complete postback..

hope this will help u.

Hi

i had already faced this problem before, but it was with the Datagrid

here is some code lines which may solve your problem

{      

con = new SqlConnection(ConfigurationManager.AppSettings["connectionstring"]);

CheckBox cb = (CheckBox)items[i].FindControl("Chk");

int rows = cmd.ExecuteNonQuery();

Hi thanks for all the reply but still, I still, I cannot solve it. I enabled the autopostback property but everytime I checked the checkbox, it refreshes the page, and then it will uncheck itself.

@ashwinik,

I've tried your method but still, even though I check my checkbox, still I always get the false value on its checked property. I am still clueless on how to access the checked property of it.

Hi ,

Hi Ashwinik,

Thanks for that, it works fine now, I don't know what happened but it seems that I need to databind my grid once only so that I will not lost my property of my checkbox. Again thanks for that!

Hi guys, I have one final question. How can I get the value on each row or each cell on a row when the checkbox is check? How to retrieve those values? Thanks in advance again!

Here is ur answer.

Ive created a table :

Table Name  : yMail
Field  : id (int) | sender(varchar) | subject(varchar)

Now pick a GridView, Connect it to the table by selecting all the fields.

- Go to the 'Edit-Columns' of the GridView.
- Add a 'template-field' (push it up to the top using the arrow mark)
- Also, convert the 'id' field into 'Template-Field' (using Convert to Template)
- Hit OK.

- Now, go to the 'Edit-Template' of the GridView.
- In the 'Column[0]' of the Item-Template, drag-drop a CheckBox
- Check out whats the ID of the CheckBox (must be CheckBox1)

- Also, check the 'Column[1]' of the 'Item-Template
- You'll see a Label; check the ID of the Label (must be Label1)

- That's it.
Now Stop 'Editing Template'

Drag-Drop a Button on the Page & name it as Delete.
Double-Click the button & include the following code in the Code-Behing of the Double-Click event.

***************************************************
protected void Button1_Click(object sender, EventArgs e)
    {
        string str = "";

        foreach (GridViewRow gr in GridView1.Rows)
        {
            CheckBox cb = (CheckBox)gr.Cells[0].FindControl("CheckBox1");
            if (cb.Checked)
            {
                Label lbl = (Label)gr.Cells[1].FindControl("Label1");

                // Delete
                str = "delete from yMail where id=" + lbl.Text;
                SqlDataSource1.DeleteCommand = str;
                SqlDataSource1.Delete();
            }
        }
    }

***********************************************************

Ya, this will help u.

Note : If u dont want id to be displayed in ur GridView, then u can set the 'id' field visibility to false, in 'Edit-Colums' option.

But still u can access the Label Filed

 I have same or similar question regarding the checkbox in gridview - I want to pass the id from different column to CheckBox1_CheckedChanged event where i am doing database call to update the field. For example - If the user checks the checkbox then i will update as in 1 for that particular id in DB and similarly if unchecks the checked one then i will update as 0 in the DB. I am posting my code. I need some help on this asap.

C# code

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    {

        string Ischecked;
        CheckBox checkbox = (CheckBox)sender;
        i = checkbox.Text; // Currently i am passing the checkbox control value.
      

        if (checkbox.Checked == true)
        {
            Ischecked = "1";
        }
        else
        {
            Ischecked = "0";
        }
        boTimeLine ActivityComplete = new boTimeLine();
        int Done = ActivityComplete.UpdateActivityFlag(i, Ischecked);
    }

 ASP.net part

 <asp:TemplateField HeaderText="Keys">
                                                                    <ItemTemplate>
                                                                        <asp:Label ID="ToDoIds" runat="server"
                                                                            Text='<%# DataBinder.Eval(Container,"DataItem.ToDoId") %>' Visible="false"></asp:Label>
               </ItemTemplate>
   <ItemStyle Width="230px" />
 </asp:TemplateField>

<asp:TemplateField HeaderText="IsComplete">

       <ItemTemplate>
        <%-- <asp:HiddenField ID="HiddenField1" runat="server" />--%>
                           
     <asp:CheckBox runat="server" Text='<%# Eval("ToDoId") %>' id="CheckBox1"
       Checked= '<%# IsChecked(DataBinder.Eval(Container,"DataItem.IsComplete")) %>'
                                                                            OnCheckedChanged="CheckBox1_CheckedChanged"    AutoPostBack="true"/>

</ItemTemplate>

<ItemStyle Width="30px" />
  </asp:TemplateField>

I finally figured and fixed the issue. Thanks anyways.

 Odd, indeed! I realize this thread is 2+ years old, but why am I now seeing the first CheckBox anomalies?

I typically use a GridView for a "master/detail" relationship, where I use the GriVBiew to show the available items and then have a "Select" button allow the use to inspect the complete details of the item and make revisions on a more traditional manner. For this, I typically use statements like the following to extract the row details:

txtPresOrder.Text = GridView1.Rows(j).Cells(3).Text

The seeming equivalent would be:

Dim lvIsNewWindow As Boolean = GridView1.Rows(j).Cells(5).ToString

Conversion from string "System.Web.UI.WebControls.DataCo" to type 'Boolean' is not valid.

So WHAT is the standard, approved straightforward way of retrieving a simple checkbox/boolean value in a GridView?

@willydavidjr:thank you!