Multiple Tables in DataSet : DataSet Read « Database ADO.net « VB.Net






Multiple Tables in DataSet

  

Imports System.Windows.Forms
Imports System.Data.SqlClient
Imports System.Data

Public Class Form1
    Inherits System.Windows.Forms.Form
    Public Sub New()
        MyBase.New()
        InitializeComponent()
    End Sub
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        Me.Button1.Location = New System.Drawing.Point(96, 48)
        Me.Button1.Size = New System.Drawing.Size(272, 40)
        Me.Button1.Text = "Do"
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(456, 142)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1})
        Me.ResumeLayout(False)

    End Sub
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim MyDataSet As New DataSet()
        Dim Tables(2) As String
        Tables(0) = "authors" : Tables(1) = "sales" : Tables(2) = "titles"
        MyDataSet = GetDataSet("data source=localhost;initial catalog=pubs;user id=sa;pwd=", Tables)
    End Sub

    Public Function GetDataSet(ByVal ConnectionString As String, ByRef Tables() As String) As System.Data.DataSet
        Dim objConn As New System.Data.SqlClient.SqlConnection(ConnectionString)
        Dim objCmd As New System.Data.SqlClient.SqlCommand()
        objCmd.Connection = objConn
        objCmd.CommandType = System.Data.CommandType.Text
        Dim objDS As New System.Data.DataSet()

        Dim objDA As New System.Data.SqlClient.SqlDataAdapter(objCmd)
        objDA.SelectCommand = objCmd
        objConn.Open()
        Dim intCount As Integer
        For intCount = 0 To Tables.GetUpperBound(0)
            objCmd.CommandText = "SELECT * FROM " & Tables(intCount)
            objDA.Fill(objDS, Tables(intCount))
        Next
        objConn.Close()
        Return objDS
    End Function
End Class

   
    
  








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