Dim zzs As new List(of Integer)zzs = e.Form.Controls("CheckedComboBox1").textDim qtzz As WinForm.TextBox = e.Form.Controls("TextBox3")If zzs IsNot Nothing Then If zzs.Contains("25") Then qtzz.Visible = True Else qtzz.Visible = False End IfEnd If
提示 System.InvalidCastException: 无法将类型为"System.String"的对象强制转换为类型"System.Collections.Generic.List~1[System.Int32]".