開啟 Winform 重寫之路之 TextBox_重寫第三章（數據類型限制的文本框）

   
         
          TextTypeEnum textInputType = {  { textInputType =    (IsValid(value, .Text =  IsValid( value,  blReturn =  (value.ToString() !=  (value.Equals() && textInputType != (!Regex.IsMatch(value, =  i =  fl = =    (!(textInputType == TextTypeEnum.Numeric || textInputType == (.Text !=  (!IsValid(.Text, .Text =   (.Parse(.Text) == .Text =    (textInputType != ch = (! (=  newText = .Text.Substring(, + ch.ToString() + .Text.Substring(.SelectionStart +  (!IsValid(newText, =