如何刷新datagridview的在vb.net [英] How to refresh Datagridview in vb.net

问题描述

在我VB.net赢得窗体应用程序，当我点击Load按钮，我显示一个文件夹中的文件名到一个DataGridView。然后，当我点击进程按钮文件将被移动到另一个文件夹中。文件已被移动之后，网格具有被刷新。

In my VB.net win form application, when I clicked Load button I am displaying a filename from a folder onto a Datagridview. Then after I click on Process button the file will be moved to another folder. After file has been moved, Grid has to be refreshed.

下面是code我写。我能移动的文件，但没有刷新Grid.Any建议好吗？

Here is the code i have written. I can able to move the file but not refreshing the Grid.Any suggestions please?

 Public Class Form1
 Private Sub Load_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Load.Click

    With DataGridView1
        .Columns.Add("Column 0", "TaskName")
        .AutoResizeColumns()
    End With

    Dim rowint As Integer = 0

    'Dim directoryInfo As New System.IO.DirectoryInfo("C:\Users\Desktop\auto")
    'Dim fileInfo = System.IO.Directory.GetFiles(directoryInfo.ToString)
    'Dim name As String

    DataGridView1.Rows.Add()
    Dim filename As String = System.IO.Path.GetFileName("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt")
    DataGridView1.Item(0, rowint).Value = filename
    rowint = rowint + 1

End Sub

Private Sub Process_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Process.Click
    System.IO.File.Move("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt", "C:\Users\Ram\Desktop\Demo\abc.txt")
    System.IO.File.Delete("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt")
    DataGridView1.Refresh()
End Sub

末级

推荐答案

在刷新（）方法只能再次重新绘制现有的网格到屏幕上。您将需要通过执行点击重新加载网格的数据。这可以通过直接调用事件或通过使用 PerformClick（）方法来进行。

The Refresh() method only redraws the existing grid to the screen again. You will need to reload the grid's data by performing a "click". This can be done by calling the event directly or by using the PerformClick() method.

Private Sub Process_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Process.Click
    System.IO.File.Move("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt", "C:\Users\Ram\Desktop\Demo\abc.txt")
    System.IO.File.Delete("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt")
    Load_Click(Load, Nothing)
    DataGridView1.Refresh()
End Sub

----或----

---- or ----

Private Sub Process_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Process.Click
    System.IO.File.Move("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt", "C:\Users\Ram\Desktop\Demo\abc.txt")
    System.IO.File.Delete("C:\Users\Ram\Desktop\auto\INQUEUE\123.txt")
    Load.PerformClick()
    DataGridView1.Refresh()
End Sub

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