locked
gridview not loading in pageload event RRS feed

  • 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

    Wednesday, December 13, 2017 9:44 PM

Answers

  • 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

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Wednesday, December 13, 2017 9:57 PM

All replies

  • 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

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Wednesday, December 13, 2017 9:57 PM
  • User1064293087 posted

    That did it a2h. Many thanks.

    Thursday, December 14, 2017 1:12 PM