续上一节
创建一个空文件:
Private Sub btnCreateFile_Click(sender As Object,e As EventArgs) Handles btnCreateFile.Click Dim fi As New FileInfo("d:\bak.jpg") If fi.Exists Then txtFileInfo.Text = "文件已经存在" Exit Sub End If fi.Create() txtFileInfo.Text = "文件已经创建" End Sub
Private Sub btnDelFile_Click(sender As Object,e As EventArgs) Handles btnDelFile.Click Dim fi As New FileInfo("d:\bak.jpg") If fi.Exists Then Try fi.Delete() txtFileInfo.Text = "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 = "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 Dim fi As New FileInfo("d:\bak.jpg") If fi.Exists Then Try fi.MoveTo("e:\cc.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
和移动目录不同的是,可以将文件移动到别的磁盘分区。
Private Sub btnAttr_Click(sender As Object,e As EventArgs) Handles btnAttr.Click Dim fi As New FileInfo("d:\bak.jpg") If fi.Exists = False Then Exit Sub Dim attr As Integer = fi.Attributes If (attr And FileAttribute.ReadOnly) = FileAttribute.ReadOnly Then If cbReadonly.Checked = False Then attr = attr Xor FileAttribute.ReadOnly Else If cbReadonly.Checked = True Then attr = attr Or FileAttribute.ReadOnly End If If (attr And FileAttribute.Hidden) = FileAttribute.Hidden Then If cbHidden.Checked = False Then attr = attr Xor FileAttribute.Hidden Else If cbHidden.Checked = True Then attr = attr Or FileAttribute.Hidden End If If (attr And FileAttribute.System) = FileAttribute.System Then If cbSys.Checked = False Then attr = attr Xor FileAttribute.System Else If cbSys.Checked = True Then attr = attr Or FileAttribute.System End If fi.Attributes = attr End Sub