99乘法VB.NET源代码哪有啊？

Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim i, j As Integer
For i = 1 To 9
For j = 1 To i
TextBox1.Text = TextBox1.Text & j & "*" & i & "=" & i * j & " "
Next
TextBox1.Text = TextBox1.Text & vbCrLf
Next
End Sub
End Class

在Microsoft Visual Studio 2010能运行成功