日期掩码文本框的空字符串 [英] Empty string for date masked textbox

问题描述

先生，我已经在基于c#.net窗口的项目中使用带遮罩的文本框作为日期.
由于我的日期掩码文本框对于插入是可选的，因此当掩码文本框保留为空或未输入日期文本时，会给我错误.那么如何接受带掩码文本框的null值呢?并在sql数据库中输入null值.

谢谢您

sir, I have used the masked textbox for date in my c#.net window based project.
As my date masked textbox is optional for inserting.So when masked textbox is left emty or without date text entered it gives me error. so how to accept null value for masked textbox ? and enter the null value in sql database.

Thanking you

推荐答案

如果您将maskedText留为空白，则
使用

If you have left the maskedText as blank then
Use

maskedTextBox1.Mask = "##/##/####";

如果DateTimePicker好得多并且没有为无效输入留出空间，您为什么需要所有这些问题?请参阅:
http://msdn.microsoft.com/en-us/library/system. windows.forms.datetimepicker.aspx [ ^ ]，
http://datetimepickerwpf.codeplex.com/ [ ^ ].

—SA

Why would you need all those problems, if DateTimePicker is much better and don''t leave a room for invalid input? Please see:
http://msdn.microsoft.com/en-us/library/system.windows.forms.datetimepicker.aspx[^],
http://datetimepickerwpf.codeplex.com/[^].

—SA

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