How to enable editing and deleting only for some rows (dynamically) in a ASP.NET GridView?

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I have a GridView filled with all the data in the Course table. I want to enable deleting and editing only for the courses taught by the user (Professor) who is currently logged in. I keep the professor ID in the Course table and I know how to take the ID of the user who is logged in, but I can't restrict the appearance of the Edit and Delete links.

I tried to work with the OnRowDataBound event, but all I managed to do is not to display this column at all, which leaded to a terrible look of the page.

Here's what I tried:

protected void coursesGrid_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow && e.Row.RowState == 

    DataControlRowState.Normal)
            {
                e.Row.Controls[0].Visible = false;
            }
        } 

This is the code for the drop down list:

    <asp:GridView runat="server" ID="coursesGrid"
        ItemType="CoursesManager.Models.Course" 
        DataKeyNames="CourseID"
        SelectMethod="coursesGrid_GetData"
    UpdateMethod="coursesGrid_UpdateItem"
    DeleteMethod="coursesGrid_DeleteItem"
    AutoGenerateColumns="False"
    OnRowDataBound="coursesGrid_RowDataBound">
    <Columns>
        <asp:CommandField ShowEditButton='True' ShowDeleteButton='True'/>
        <asp:DynamicField DataField="Topic" />
    </Columns>
</asp:GridView>

asked 31 secs ago

nicck

10

How to enable editing and deleting only for some rows (dynamically) in a ASP.NET GridView?