检测 Datagridview 控件中的字母或数字键并将处理后的键发送到文本框 VB.BET

发布于 01-02 18:11 字数 113 浏览 4 评论 0原文

我正在开发一个包含 datagridview 和文本框的表单，我需要 datagridview 检测字母表中的任何字母或数字，然后选择输入并将按下的键发送到输入。

我找不到任何解决方案，提前致谢。

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鯉魚旗2025-01-09 18:11:55

您需要将事件处理程序附加到正在接收响应 KeyPress 事件的数据的单元格编辑控件。这可以通过处理 EditingControlShowing 事件来完成。

以下是执行此操作的一些基本代码：

Public Class Form1

    Private Sub DataGridView1_EditingControlShowing(sender As System.Object, e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
        Dim c As Control
        c = e.Control

        AddHandler c.KeyPress, AddressOf Handle_KeyPress


    End Sub

    Protected Sub Handle_KeyPress(sender As Object, e As KeyPressEventArgs)
        If Char.IsLetterOrDigit(e.KeyChar) Then
            TextBox1.Text += e.KeyChar
            e.Handled = True
        End If
    End Sub
End Class

您还可以响应其他事件，例如 KeyDown，但通常首选 KeyPress，因为它为您提供带有事件参数的 Char。对于像 KeyDown 这样的事件，您将拥有 KeyCodes，它不允许您轻松判断输入是大写还是小写。

You will need to attach an event handler to the cell editing control that is receiving the data that will respond to the KeyPress event. This can be done by handling the EditingControlShowing event.

Here is some basic code that does this:

Public Class Form1

    Private Sub DataGridView1_EditingControlShowing(sender As System.Object, e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
        Dim c As Control
        c = e.Control

        AddHandler c.KeyPress, AddressOf Handle_KeyPress


    End Sub

    Protected Sub Handle_KeyPress(sender As Object, e As KeyPressEventArgs)
        If Char.IsLetterOrDigit(e.KeyChar) Then
            TextBox1.Text += e.KeyChar
            e.Handled = True
        End If
    End Sub
End Class

There are other events that you can respond to such as KeyDown but KeyPress is generally preferred since it gives you a Char with the event args. With events like KeyDown you will have KeyCodes instead, which don't allow you to easily tell if the input was upper or lower case.

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