Find CheckBox inside GridView in RowUpdating event using C# in ASP.Net

Hi Chriz,

I have cross checked your code and getting the status true or false as per the condition. The only problem in the code is you need to bind the GridView inside not IsPostBack condition if you didn't like below.

if (!IsPostBack)
{
     BindGrid();
}

The problem is that I don't get the TRUE/FALSE even though I check the checkboxes.

I always get empty string to status.

I have cross checked the code and able to get true false as per the checkboxes check. Below is the sample code.

HTML

<div>
    <asp:GridView ID="gvChecks" runat="server" AutoGenerateColumns="false" OnRowUpdating="gvChecks_RowUpdating"
        CssClass="mGrid" onrowcancelingedit="gvChecks_RowCancelingEdit" 
        onrowediting="gvChecks_RowEditing">
        <Columns>
            <asp:TemplateField HeaderText="UploadDocID" ItemStyle-Width="25" Visible="false">
                <ItemTemplate>
                    <asp:Label ID="lblUploadDocID" runat="server" Text='<%#Eval("UploadDocID") %>' Width="25"></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Description">
                <ItemTemplate>
                    <asp:Label ID="lblFileDescr" runat="server" Text='<%#Eval("FileDescr") %>' Width="500"></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="CheckResult" Visible="false">
                <ItemTemplate>
                    <asp:Label ID="lblCheckResult" runat="server" Text='<%#Eval("DocValid") %>' Width="50"></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Yes">
                <ItemTemplate>
                    <asp:CheckBox ID="cbYes" runat="server" Enabled="false" />
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:CheckBox ID="cbYes" runat="server" />
                </EditItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="No" ItemStyle-Width="60">
                <ItemTemplate>
                    <asp:CheckBox ID="cbNo" runat="server" Enabled="false" />
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:CheckBox ID="cbNo" runat="server" />
                </EditItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField ItemStyle-Width="150">
                <ItemTemplate>
                    <asp:LinkButton ID="btnEdit" Text="Edit" runat="server" CommandName="Edit" />
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:LinkButton ID="btnUpdate" Text="Update" runat="server" CommandName="Update" />
                    <asp:LinkButton ID="btnCancel" Text="Cancel" runat="server" CommandName="Cancel" />
                </EditItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
</div>

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        BindGrid();
    }
}

private void BindGrid()
{
    DataTable dt = new DataTable();
    dt.Columns.Add("UploadDocID", typeof(int));
    dt.Columns.Add("FileDescr", typeof(string));
    dt.Columns.Add("DocValid", typeof(string));
    dt.Rows.Add(1, "Documnent File", "yes");
    dt.Rows.Add(2, "HTML File", "yes");
    dt.Rows.Add(3, "Word File", "yes");
    dt.Rows.Add(4, "Excel File", "yes");
    gvChecks.DataSource = dt;
    gvChecks.DataBind();
}

protected void gvChecks_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    try
    {
        Label checkID = (Label)gvChecks.Rows[e.RowIndex].FindControl("lblUploadDocID");
        CheckBox resYes = (CheckBox)gvChecks.Rows[e.RowIndex].FindControl("cbYes");
        CheckBox resNo = (CheckBox)gvChecks.Rows[e.RowIndex].FindControl("cbNo");
        string status = String.Empty;

        if (resYes.Checked && resNo.Checked)
        {
            //appObj.myMessageBox("You can only choose one checkbox.");
        }
        else
        {
            if (resYes.Checked)
            {
                status = "TRUE";
            }
            else if (resNo.Checked)
            {
                status = "FALSE";
            }
            else
            {
                status = String.Empty;
            }

        }
        gvChecks.EditIndex = -1;
        BindGrid();
        // updateApplicationCheckList(checkID.Text, status);
        // bindApplicationChecks();
    }
    catch (Exception ex)
    {
        //myMessageBox(ex.Message);
    }
}
protected void gvChecks_RowEditing(object sender, GridViewEditEventArgs e)
{
    gvChecks.EditIndex = e.NewEditIndex;
    BindGrid();
}

protected void gvChecks_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
    gvChecks.EditIndex = -1;
    BindGrid();
}

Thank you for the help, I changed my code based on yours and it works now.