I am trying to an ImageUrl to an image in a Template Field in GridView but keep getting the error:

Object reference not set to an instance of an object. on this line:

Dim imagePath As String = rowView("image\_path")

I've never done this before on a GridView but had it working on a ListView.

Thanks for any help heres my code:

**.APSX**

```
        <asp:GridView ID="gvImages" DataKeyNames="id" runat="server" AutoGenerateColumns="False" BorderWidth="0px" GridLines="None">
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:CheckBox ID="imageId" runat="server" />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Image ID="imageFile" runat="server"></asp:Image>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="id" />
        </Columns>
    </asp:GridView>

```

**CODE BEHIND**

```
Protected Sub gvImages_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvImages.RowDataBound

    Dim rowView As DataRowView = CType(e.Row.DataItem, DataRowView)

    Dim imagePath As String = rowView("image_path")

    Dim strImageUrl As String = "~/admin/images/cases/" & Request.QueryString("uid") & "/" & imagePath

    Dim imageFile As System.Web.UI.WebControls.Image = CType(e.Row.FindControl("imageFile"), System.Web.UI.WebControls.Image)
    imageFile.ImageUrl = strImageUrl

End Sub

```