Check View All on Header Template GridViewDataColumn

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C#

ASP.NET

DevExpress

TestAccessControl.aspx

<dx:ASPxGridView ID="grid"  runat="server" AutoGenerateColumns="False"
    EnableViewState="False" width="100%">
     <Columns>
          <dx:GridViewDataTextColumn Caption="Control Field" FieldName="Name"
              VisibleIndex="0">
               <HeaderStyle Font-Bold="True" HorizontalAlign="Left" />
               <CellStyle HorizontalAlign="Left">
               </CellStyle>
          </dx:GridViewDataTextColumn>
          <dx:GridViewDataColumn VisibleIndex="1">
               <CellStyle HorizontalAlign="Center">
               </CellStyle>
               <HeaderTemplate>
                    <dx:ASPxCheckBox ID="cbViewAll"  runat="server" ToolTip="Select View
                        ALL">
                    </dx:ASPxCheckBox>
               </HeaderTemplate>
               <DataItemTemplate>
                    <dx:ASPxCheckBox ID="cbView" Checked='<%# Eval("status") %>'
                        CheckBoxStyle-HorizontalAlign="Center"  runat="server">
                    </dx:ASPxCheckBox>
               </DataItemTemplate>
          </dx:GridViewDataColumn>
          <dx:GridViewCommandColumn ShowSelectCheckbox="true" VisibleIndex="2">
               <HeaderTemplate>
                    <dx:ASPxCheckBox ID="cbInsertAll"  runat="server" ToolTip="Select
                        Insert ALL">
                    </dx:ASPxCheckBox>
               </HeaderTemplate>
          </dx:GridViewCommandColumn>
          <dx:GridViewCommandColumn ShowSelectCheckbox="true" VisibleIndex="3">
               <HeaderTemplate>
                    <dx:ASPxCheckBox ID="cbUpdateAll"  runat="server" ToolTip="Select
                        Update ALL">
                    </dx:ASPxCheckBox>
               </HeaderTemplate>
          </dx:GridViewCommandColumn>
          <dx:GridViewCommandColumn ShowSelectCheckbox="true" VisibleIndex="4">
               <HeaderTemplate>
                    <dx:ASPxCheckBox ID="cbDeleteAll"  runat="server" ToolTip="Select
                        Delete ALL">
                    </dx:ASPxCheckBox>
               </HeaderTemplate>
          </dx:GridViewCommandColumn>
     </Columns>
     <SettingsDataSecurity AllowDelete="False" AllowInsert="False" />
     <Styles>
          <Header HorizontalAlign="Center" />
     </Styles>
     <SettingsBehavior AllowDragDrop="false" />
     <Settings ShowGroupPanel="false"></Settings>
     <SettingsPager PageSize="10" />
     <SettingsText EmptyDataRow="Doesn't have a data" />
</dx:ASPxGridView>

TestAccessControl.aspx.cs

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using MesinAbsensiLib.DataAccess.Extended;
using MesinAbsensiLib;
using System.Text.RegularExpressions;
using System.Data.Entity;

public partial class AccessControl : System.Web.UI.Page
{
    MesinAbsensiEntities md = new MesinAbsensiEntities();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            providerights();
            GetAccessControl();
           
        }
        Alert.Visible = false;
    }
    private void providerights()
    {
        HttpCookie uCookies = Request.Cookies["uCookies"];
        string UserName = uCookies["UserID"];
        //int AreaId = Convert.ToInt32(uCookies["AreaID"]);
        int ControlId = Convert.ToInt32(uCookies["AccessControlID"]);
        // string Roll = uCookies["Roll"];
        var result1 = md.sp_getViewStatus(ControlId, 2).ToList();
        if (result1[0].Value == false)
        {
            //Response.Redirect("../Error.aspx?ms=AccessD");
            Response.Redirect("../error.aspx?ms=AccessD");
        }

    }
    private void GetAccessControl()
    {
        var result = md.tblAccessControls.ToList();
        if (result.Count > 0)
        {
            ddlAccessControl.Items.Clear();
            ddlAccessControl.DataSource = result;
            ddlAccessControl.DataTextField = "Name";
            ddlAccessControl.DataValueField = "Id";
            ddlAccessControl.DataBind();
            ddlAccessControl.Items.Insert(0, "--Select--");
        }
        else
        { 
        ddlAccessControl.Items.Clear();
        ddlAccessControl.Items.Insert(0, "--Select--");
        }
    }
  


    protected void btnSave_Click(object sender, EventArgs e)
    {
        int ControlId=Convert.ToInt32(ddlAccessControl.SelectedValue);
        foreach (GridViewRow item in gv.Rows)
        {
            Int32 Id = Convert.ToInt32(((Label)item.FindControl("id")).Text);
            Int32 FId = Convert.ToInt32(((Label)item.FindControl("fid")).Text);
            bool Status = ((CheckBox)item.FindControl("chkStatus")).Checked;
          //  bool ViewStatus = ((CheckBox)item.FindControl("chkviewStatus")).Checked;
            if (FId == 0)
            {
                tblControlFieldAllocate tbl = new tblControlFieldAllocate();
                tbl.ControlId = ControlId;
                tbl.ControlField = Id;
                tbl.Status = Status;
              //  tbl.ViewStatus = ViewStatus;
                md.tblControlFieldAllocates.Add(tbl);
                md.SaveChanges();
            }
            else
            {
                var result = md.tblControlFieldAllocates.Where(c => c.Id == FId).ToList();
                if (result.Count > 0)
                {
                    result[0].ControlId = ControlId;
                    result[0].ControlField = Id;
                    result[0].Status = Status;
                  //  result[0].ViewStatus = ViewStatus;
                    md.SaveChanges();
                }
            }
        }
        Alert.Visible = true;
        GETDATA();
    }

    private void GETDATA()
    {
       if(ddlAccessControl.SelectedIndex!=0)
       {
           int ControlId=Convert.ToInt32(ddlAccessControl.SelectedValue);
        var result = (from AC in md.tblControlFields
                      join AFA in md.tblControlFieldAllocates on AC.Id equals AFA.ControlField into gj
                      from PAR in gj.Where(c => c.ControlId == ControlId).DefaultIfEmpty()
                      orderby AC.Orders ascending
                      select new
                      {
                          AC.Id,
                          FId = (PAR.Id == null) ? 0 : PAR.Id,
                         AC.Name,
                          status = (PAR.Status == null) ? false : PAR.Status
                      //    ViewStatus = (PAR.ViewStatus == null) ? false : PAR.ViewStatus
                      }).ToList();
        gv.DataSource = result;
        gv.DataBind();
       }
    }

    protected void ddlAccessControl_SelectedIndexChanged(object sender, EventArgs e)
    {
        GETDATA();
    }
}

I have made a gridview that has a checkbox in the header template, but when clicking the header checkbox is checked on the template does not happen anything. how do I do that?


Thanks.