vb.net 只允许文本框中的数字值？
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时间：2020-09-17 18:57:24 来源:igfitidea点击:
Allow only numeric values in textbox?
提问by dba2015
I need to control the imputs of users in textbox so how I do that? Thank you
我需要控制用户在文本框中的输入，我该怎么做？谢谢
回答by Dino
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If Asc(e.KeyChar) <> 13 AndAlso Asc(e.KeyChar) <> 8 AndAlso Not IsNumeric(e.KeyChar) Then
MessageBox.Show("Please enter numbers only")
e.Handled = True
End If
End Sub
Already Asked same questions Here
已经在这里问过同样的问题
How to allow user to enter only numbers in a textbox in vb.net?
回答by Mahadev
If Asc(e.KeyChar) <> 8 Then
If Asc(e.KeyChar) < 48 Or Asc(e.KeyChar) > 57 Then
e.Handled = True
End If
End If
