checkbox in grid

hello i have one grid,,,,,in that grid i have one column contains checkbox to select particular column.....

i have one button outside grid ...

my question is that if i click on that button all the checkbox in grid should be checked...

how can i do this....

plz provide me code by example..

thanks

hi friend,

First we have the .aspx markup

<script type="text/javascript">
    function SelectAll(id) {
        var frm = document.forms[0];
        for (i=0;i
            if (frm.elements[i].type == "checkbox") {
                frm.elements[i].checked = document.getElementById(id).checked;
            }
        }
    }  
script>
<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" Width="400px">
    <Columns>
        <asp:TemplateField>
            <AlternatingItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" />
            AlternatingItemTemplate>
            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" />
            ItemTemplate>
            <HeaderTemplate>
                <asp:CheckBox ID="cbSelectAll" runat="server" Text="Select All" />
            HeaderTemplate>
            <HeaderStyle HorizontalAlign="Left" />
            <ItemStyle HorizontalAlign="Left" />
        asp:TemplateField>
    Columns>
asp:GridView>

then we have c# code:

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 you are done.

Please mark as answer if it helps....

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Choudhary16y ago
hi friend,

First we have the .aspx markup

<script type="text/javascript">

    function SelectAll(id) {

        var frm = document.forms[0];

        for (i=0;i
            if (frm.elements[i].type == "checkbox") {

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

            }

        }

    }

script>

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

    <Columns>

        <asp:TemplateField>

            <AlternatingItemTemplate>

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

            AlternatingItemTemplate>

            <ItemTemplate>

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

            ItemTemplate>

            <HeaderTemplate>

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

            HeaderTemplate>

            <HeaderStyle HorizontalAlign="Left" />

            <ItemStyle HorizontalAlign="Left" />

        asp:TemplateField>

    Columns>

asp:GridView>
then we have c# code:

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 you are done.

Please mark as answer if it helps....
0
BangaruBabu Pureti16y ago
CheckBox chk = (CheckBox)gv.HeaderRow.FindControl("chkheader");

for (int i = 0; i < gv.Rows.Count; i++)
{
CheckBox chkrow = (CheckBox)gv.Rows[i].FindControl("chkbox");
chkrow.Checked = true;
}
0
Lalit M16y ago
you can check previous post here.
0