ASP.Net中GridView的JavaScript

Question

I am creating a validation for gridview row Selection.

There is a "Delete" button and a GridView, in that GridView, there is a "Select" LinkButton column.

I am trying to create a validation for that, When clicking on the "Delete" Button, If the particular row in GridViewis not selected for deleting, then it should show a alert message ie "First select any row to delete."

So I wrote a code for the validation:

<script type="text/javascript">

function validateGridSelection() {

    var GridSelectedID = document.getElementById('<%=GridView1.ClientID%>');

    if(GridSelectedID.rows.selectedIndex = -1) {
        alert("First select any row to delete");
        return false;
    }
}

</script>

But this JavaScript is not working for this validation.

So, Please help me out to sort out this problem.

Thanks.

Answer 1

Is your GridSelectedID getting the grid control? If not try making your grid ClientIDMode="Static".

Answer 2

try this 
function confirmBox() 
    {
        var index = <%=grdMTHints.SelectedIndex%>;
        if (index > -1) 
        {
            return confirm('Are you sure you want to delete this record?');
        }
        else 
        {
            alert('Plese select row to be deleted.');
        }
    }

<asp:Button 
        ID="btnDelete" CssClass="buttonStyle" runat="server" Text="Delete"  CommandName="Delete"         
        OnClientClick="javascript:return confirmBox();" 
        ToolTip="Delete selected row." onclick="btnDelete_Click"/>