gridview not loading in pageload event

Question

User1064293087 posted

This should be simple. I have searched all day and can't find out why only the button event loads and populates the gridview on my page.

Here is the page:

<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">

    <p>

        <br />

        <H1>Job Descriptions</H1>

    </p>

    <p>

        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" ShowHeaderWhenEmpty="True">

            <Columns>

                <asp:HyperLinkField HeaderText="Name" DataTextField="Name" DataNavigateUrlFields="Name" 

                    DataNavigateUrlFormatString="~/Resources/JobDesc/{0}" Target="_blank" >

                  </asp:HyperLinkField>

                <asp:BoundField DataField="CreationTime" DataFormatString="&quot;{0:MMMM d, yyyy}&quot;" HeaderText="Created Date" />

            </Columns>

        </asp:GridView>

            

    </p>

    <p>

        <asp:Button ID="Button1" runat="server" Text="Button" />

    </p>

</asp:Content>

Here is the codebehind:

Public Class JobDesc

    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

       Dim dinfo As DirectoryInfo = New DirectoryInfo(Server.MapPath("~/Resources/JobDesc"))

        GridView1.DataSource = dinfo.GetFiles

        GridView1.DataBind()

    End Sub

    Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        Dim dinfo As DirectoryInfo = New DirectoryInfo(Server.MapPath("~/Resources/JobDesc"))

        GridView1.DataSource = dinfo.GetFiles

        GridView1.DataBind()

    End Sub

End Class

Can anyone see what I am missing here? It works from the button click but not in the page load event.

Thanks

Answer 1

User2103319870 posted

flprogrammer

Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Make sure you have a Handles Me.Load added on your PageLoad code like below

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    
    End Sub

Also you should load the gridview with data inside if Not IsPostback block like below

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            Dim dinfo As DirectoryInfo = New DirectoryInfo(Server.MapPath("~/Resources/JobDesc"))
            GridView1.DataSource = dinfo.GetFiles
            GridView1.DataBind()
        End If
    End Sub

If you are still didnt get the Gridview populated then put a breakpoint and see if debugger hits the pageload event at runtime

Answer 2

User1064293087 posted

That did it a2h. Many thanks.