vb.net 教程 4-5 文件操作 File 2

继续上一节的学习。

创建一个空文件：

    Private Sub btnCreateFile_Click(sender As Object,e As EventArgs) Handles btnCreateFile.Click
        If File.Exists("d:\bb.jpg") Then
            txtFileInfo.Text = "该文件已经存在"
        Else
            File.Create("d:\bb.jpg")
            txtFileInfo.Text = "创建文件成功"
        End If
    End Sub

删除文件：

    Private Sub btnDelFile_Click(sender As Object,e As EventArgs) Handles btnDelFile.Click
        If File.Exists("d:\bb.jpg") Then
            Try
                File.Delete("d:\bb.jpg")
                txtFileInfo.Text = "该文件已经删除"
            Catch ex As Exception
                txtFileInfo.Text = "删除文件时发生错误：" & ex.Message
            End Try

        Else
            txtFileInfo.Text = "该文件不存在"
        End If
    End Sub

移动文件：

    Private Sub btnMoveFile_Click(sender As Object,e As EventArgs) Handles btnMoveFile.Click
        If File.Exists("d:\bb.jpg") Then
            Try
                File.Move("d:\bb.jpg","e:\bb.jpg")
                txtFileInfo.Text = "文件已经移动"
            Catch ex As Exception
                txtFileInfo.Text = "移动文件时发生错误，" & ex.Message
            End Try
        Else
            txtFileInfo.Text = "文件不存在"
        End If
    End Sub

学习更多vb.net知识，请参看 vb.net 教程 目录

原文地址：https://www.jb51.cc/vb/256543.html