验证代码以在文本框中使用空格键 [英] validate code for using space key in textbox

问题描述

我要验证文本框中使用空格键的代码，它不能仅接受输入空格

I want validate code for using space key in textbox ,It can not accept the the entring space only

推荐答案

Private Sub txtTExtBoxName_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtItemCode.KeyPress
    If Asc(e.KeyChar) = Keys.Space Then
        MessageBox.Show("Add some stuff here")
    End If
End Sub

使用以下代码:

Use The Following Code :

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
       Select Case Asc(e.KeyChar)
           Case 32   '32-KeyChar Of Space
               e.Handled = True
               MessageBox.Show("You Can Not Enter Space Here!")
           Case Else
               'Else Code Goes Here
       End Select
   End Sub

否则，如果您只是不想允许在TextBox中输入单个空格，请使用此空格:

Or Else If you Just don''t want to allow to enter Single Space in TextBox Use this one :

IF Trim(TextBox1.Text)="" Then
    MessageBox.Show("Please Enter Data Here!")
Else
   'Else Code Goes Here
End If

希望对您有所帮助！:)

I Hope It Will Help You!:)

正则表达式仅接受字符和空格

正则表达式=/^ [a-zA-Z] +

Regular expression to accept only characters and spaces

regular expression=/^[a-zA-Z ]+

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