I need check whether CheckBox in GridView is checked or not in c# and ASP.Net and to check that all the checkboxes in my gridview are selected, some are selected and some are not, according to a predefined condition, the previous column in the gridview must equal OK.

If all the checkboxes of the gridview are selected I have to continue to execution of the page, otherwise if also even if only one checkbox is not selected I have to block the execution of the page..

I don’t have error but the check whether CheckBox in GridView is checked not working.

My code below.

.aspx

<asp:TemplateField ItemStyle-HorizontalAlign="Center">
    <HeaderTemplate>
        <asp:CheckBox ID="chkBxHeader"
            AutoPostBack="true" OnCheckedChanged="chkBxHeader_CheckedChanged" runat="server" />
    </HeaderTemplate>
    <ItemTemplate>
        <div>
            <asp:CheckBox ID="chkRow" runat="server" />
        </div>
    </ItemTemplate>
</asp:TemplateField>

.cs

protected void chkBxHeader_CheckedChanged(object sender, EventArgs e)
{
    try
    {
        foreach (GridViewRow row in GridView1.Rows)
        {
            if (row.RowType == DataControlRowType.DataRow)
            {
                CheckBox chkRow = (row.FindControl("chkRow") as CheckBox);

                if (chkRow.Checked)
                {

                }
                else
                {
                    Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert", "alert('KO');", true);
                }
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("Skipped exception! " + ex);
    }
}