How to Check Check Box In GridView

I have One DropDown Bind With Some Procedure Table.And One GridView Bind Same Procedure Table and Grid View Have Templte Column,In Template Column Have Check Box.Both The ddl and GridView Working Properly.

The Problem is there I want If Any Procedur Select in Dropdown then This Procedure Is Also check ijn GridView.




7/11/2008 6:10:21 AM 72751 articles. 3 followers. Follow

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try this javascript on the select onchange of dropdownlist 

DgItemCount=4;//total gridview row count

var CheckCount = 0;

for ( i=2;i<DgItemCount + 2 ;i++)


if(document.getElementById("gridview1_ctl" + i + "_youritemname") .value== document.getElementById("dropdownname") .value)


document.getElementById("gridview1_ctl" + i + "_Chkboxname").checked=true;



shihas ...
*****Please Mark the post as Answer if the Post helps you*****
7/11/2008 9:34:26 AM

You can check it at RowDataBound event of GridView.. see below

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

        if (e.Row.RowType == DataControlRowType.DataRow)
            DropDownList ddl = (DropDownList)e.Row.FindControl("DropDownList1");
            CheckBox cb = (CheckBox)e.Row.FindControl("CheckBox1");
            if (ddl != null && cb != null)
                if (ddl.SelectedItem.Text == cb.Text)
                    cb.Checked = true;
                    cb.Checked = false;




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7/11/2008 9:58:01 AM


try this example:

<script type="text/javascript">

    function SelectAll(id) {

        var frm = document.forms[0];

        for (i=0;i<frm.elements.length;i++) {

            if (frm.elements[i].type == "checkbox") {

                frm.elements[i].checked = document.getElementById(id).checked;





<!-- assuming that SqlDataSource1 is the datasource for my GridView -->

<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" Width="400px">




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



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



                <asp:CheckBox ID="cbSelectAll" runat="server" Text="Select All" />


            <HeaderStyle HorizontalAlign="Left" />

            <ItemStyle HorizontalAlign="Left" />




protected void GridView1_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)

    if (e.Row.RowType == DataControlRowType.Header)

        //adding an attribute for onclick event on the check box in the header

        //and passing the ClientID of the Select All checkbox

        ((CheckBox)e.Row.FindControl("cbSelectAll")).Attributes.Add("onclick", "javascript:SelectAll('" + ((CheckBox)e.Row.FindControl("cbSelectAll")).ClientID + "')");



and to get checked row for delete

foreach (GridViewRow row in GridView1.Rows)
            CheckBox checkbox = (CheckBox)row.FindControl("cbxId");

            if (checkbox.Checked == true)
                int Id = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value);
               // your delete method



Good Luck

7/13/2008 6:33:51 AM

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