private void panelClear(string mess)
{
if (mainPanel.Controls.Count > 0)
{
mainPanel.Controls.Clear();
}
}
private void btnBout_Click(object sender, EventArgs e)
{
NewProtagonistForm newProtagonistForm = new NewProtagonistForm();
this.panelClear("字符串");
mainPanel.Controls.Add(newProtagonistForm);
}
{
if (mainPanel.Controls.Count > 0)
{
mainPanel.Controls.Clear();
}
}
private void btnBout_Click(object sender, EventArgs e)
{
NewProtagonistForm newProtagonistForm = new NewProtagonistForm();
this.panelClear("字符串");
mainPanel.Controls.Add(newProtagonistForm);
}
If mainPanel.Controls.Count > 0 Then
mainPanel.Controls.Clear()
End If
End Sub
Private Sub btnBout_Click(sender As Object, ByVal e As EventArgs)
Dim newProtagonistForm As New NewProtagonistForm
Me.panelClear("字符串")
mainPanel.Controls.Add(newProtagonistForm)
End Sub
If mainPanel.Controls.Count > 0 Then
mainPanel.Controls.Clear()
End If
End Sub
Private Sub btnBout_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBout.Click
Dim newProtagonistForm As New NewProtagonistForm
Me.panelClear("字符串")
mainPanel.Controls.Add(newProtagonistForm)
End Sub
不过确实是手写的,第二个写的匆忙少了个ByVal