vs.net打开文件对话框的使用

1、 新建文件“打开文件对话框”

2、 新建窗体form1

3、 向form1添加控件richtextbox1

4、 添加命令按钮

5、 添加代码

Public Class Form1

    '打开文件

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As  _                              System.EventArgs) Handles Button1.Click

        Dim openFile1 As New OpenFileDialog

        If (openFile1.ShowDialog() = DialogResult.OK) _

        And (openFile1.FileName.Length > 0) Then

            Me.RichTextBox1.LoadFile(openFile1.FileName, _

            RichTextBoxStreamType.PlainText)

        End If

    End Sub

End Class

6、 效果