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08.05.2008 at 11:27AM PDT, ID: 23623273
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9.3

GridView does not show when bound to DataTable

Asked by kevingibbs1 in Web Languages/Standards, Programming for ASP.NET, Microsoft Visual Basic.Net

Tags:

As the title suggests, I have a gridview that is being databound to a datable.  However it does not show up when the page is loaded.  

I have a label set up to show the values at a couple different places in the datatable.  The datatable is, in fact, populated with the correct data from the SQL database.  It just won't show in the gridview.Start Free Trial 
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Dim SQLStr As String
    Dim SQLConn As New SqlConnection()
    Dim SQLCmd As New SqlCommand()
    Dim SQLdr As SqlDataReader
 
    Dim indData As New DataTable
    Dim indArray(4) As String
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Try
            sortByInd()
            GridView1.AutoGenerateColumns = False
            GridView1.DataSource = indData
            GridView1.DataBind()
        Catch ex As Exception
            Label1.Text = ex.ToString
        End Try
 
    End Sub
 
    Private Sub sortByInd()
        Try
            SQLConn.ConnectionString = SqlDataSource1.ConnectionString
            SQLCmd.CommandText = "SELECT Username, TotalQuestions, CorrectQuestions, School FROM [Users] ORDER BY CorrectQuestions"
            SQLCmd.Connection = SQLConn
            SQLConn.Open()
            SQLdr = SQLCmd.ExecuteReader
            indData.Columns.Add("Username")
            indData.Columns.Add("Total")
            indData.Columns.Add("Correct")
            indData.Columns.Add("Percentage")
            indData.Columns.Add("School")
            While SQLdr.Read()
                indArray(0) = (SQLdr(0))
                indArray(1) = (SQLdr(1))
                indArray(2) = (SQLdr(2))
                indArray(3) = (SQLdr(2) / SQLdr(1))
                indArray(4) = (SQLdr(3))
                indData.Rows.Add(indArray)
            End While
 
            
 
            Label1.Text = indData.Rows.Count & indData.Columns.Item(1).ToString & indData.Rows.Item(3).Item(0)
        Catch ex As Exception
            Label1.Text = ex.ToString
        End Try
    End Sub
[+][-]08.05.2008 at 11:29AM PDT, ID: 22163604

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About this solution

Zones: Web Languages/Standards, Programming for ASP.NET, Microsoft Visual Basic.Net
Tags: vb.net
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Solution Provided By: Limbeck
Participating Experts: 1
Solution Grade: A
 
 
 
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