Checkbox List in Gridview:


Description:

Description:

If the gridview is having checkbox list as a template column and for the

checkbox list, header item is(first item) "ALL", then if you select "ALL" in

checkboxlist, it will all items in the checkboxlist. If you have any scenario,then you can use this code.
 


Javascript:


<script type="text/javascript">
  function chkboxlistchecking(clientids,checkedval)
 {		
     var a = document.getElementById(clientids);	
     var ar = a.getElementsByTagName("input");
     var cnt=0;
     var notchecked=0;			
			
	for(i=0;i<ar.length;i++)
	{				
	   var arc = a.getElementsByTagName("label");

	      for(k=1;k<ar.length;k++)
	      {
		 
                  if(ar[k].checked)
		    cnt = parseInt(cnt,10)+1;
		  else
		    notchecked = parseInt(notchecked,10)+1;
	      }
	      if(ar[i].checked == true)
	      {
		  if(arc[i].innerText == 'All' && parseInt(cnt,10) == 0)
		  {						
						
                     for(k=1;k<ar.length;k++)
		     {
			ar[k].checked = true;
		     }		
		     flag="true";	
		     flag1="false";	
		  }				
		  else if(arc[i].innerText == 'All' && parseInt(notchecked,10) > 0 && flag1=="false")
		  {						
		     ar[0].checked = false;	
		     flag1="true";
		     flag="false";					
		  }					
		  else if(arc[i].innerText == 'All' && parseInt(notchecked,10) > 0 && flag1=="true")
		  {
						
		     for(f=0;f<ar.length;f++)
		     {
			ar[f].checked = true;
		     }	
		     flag1="false";
		     flag="true";
		  }
	       }	
	       else if(ar[i].checked == false)
	       {					
		  if(arc[i].innerText == 'All' && (parseInt(cnt,10) == ar.length-1) && flag=="false")
		  {						
			ar[0].checked = true;		
			flag="true";	
			flag1="false";			
		  }
		  else if(arc[i].innerText == 'All' && flag=="true")
		  {					  
			for(k=0;k<ar.length;k++)
			{
			   ar[k].checked = false;
			}
			flag="false";
			flag1="false";											
		  }
	        }		
				
	}		
}
</script>


Design View:


<asp:GridView id="GridviewBatch" runat="server" Width="248px" 
          BorderWidth="0px" PageSize="2"
        Height="250px" CellPadding="0" AutoGenerateColumns="False" 
          onrowdatabound="GridviewBatch_RowDataBound">
                       
         <Columns>	
                <asp:BoundField  DataField="BatchID" HeaderText="Batch" 
                    ItemStyle-HorizontalAlign="Left" HeaderStyle-HorizontalAlign="Left">
            		<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
            		<ItemStyle HorizontalAlign="Left"></ItemStyle>
                </asp:BoundField>
	        <asp:TemplateField HeaderText="UserGroupName" HeaderStyle-HorizontalAlign="Left">
		    <ItemTemplate>
			 <dIV class="scrollbars" id="divChk" style="OVERFLOW: auto;height:85px; width:105px">
			    <asp:checkboxlist id="cblstMenuItems" runat="server" BorderWidth="1px"  Visible="True"
				 BorderColor="Black" AutoPostBack="False" Height="40px"></asp:checkboxlist>
			 </dIV>
		    </ItemTemplate>
                	<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
	         </asp:TemplateField>
	 </Columns>
</asp:GridView>

Code Behind:


//Connetion string from web.config

string sDsn = ConfigurationSettings.AppSettings["ConnectionString"].ToString();
protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        BindGrid();
    }
}
private void BindGrid()
{
    
    //Binding Gridview with some data
    
    DataSet ds = SqlHelper.ExecuteDataset(sDsn, "Admiral_getBatchDetails");

    if (ds.Tables.Count > 0)
    {
       if (ds.Tables[0].Rows.Count > 0)
       {
            GridviewBatch.DataSource = ds.Tables[0];
            GridviewBatch.DataBind();  
       }             
    }        
      
}
protected void GridviewBatch_RowDataBound(object sender, GridViewRowEventArgs e)
{
    
    //Binding checkbox list to Gridview    
        
    if (e.Row.RowIndex != -1 && e.Row.DataItem != null)
    {
         
    	
    	//Itendifying checkboxlist in gridview template column  
   	
         CheckBoxList chklist = (CheckBoxList)e.Row.Cells[1].FindControl("cblstMenuItems");
         DataSet bpds = SqlHelper.ExecuteDataset(sDsn, "PS_Admiral_GetUsrGroups");
         if (bpds.Tables.Count > 0)
         {
             if (bpds.Tables[0].Rows.Count > 0)
             {
		    
    		    
                    //Assigning DataSource to checkboxlist   
                    
                    chklist.DataSource = bpds.Tables[0];  
                    chklist.DataTextField = "usergroupname";
                    chklist.DataValueField = "usergroupid";
                    chklist.DataBind();
                    chklist.Items.Insert(0, new ListItem("All", "All"));
             }
         }
         chklist.Attributes.Add("onclick", "chkboxlistchecking('" + chklist.ClientID.ToString() + "','" + chklist.Items.Count + "')");
    }
}