在vb.net的服务器端验证文本框 [英] Validating textbox at server side in vb.net

问题描述

如何在服务器端验证文本框

how to validate textbox at server side

推荐答案

使用CustomValidator服务器控件进行服务器端验证.
http://msdn.microsoft.com/en-us/library/aa479013.aspx [ ^ ]
选中清单15

Use CustomValidator server control for server-side validation.
http://msdn.microsoft.com/en-us/library/aa479013.aspx[^]
Check Listing 15

，如果文本框具有runat="server"，则只需通过其名称进行访问即可，并使用Text 属性.

Provided the textbox has runat="server", then just access it via it''s name, and use the Text property.

要在服务器服务器端进行验证，有两种方法，

使用验证控件或手动验证.

1.要使用验证控件应用验证，可以使用CustomValidator.使用此控件，您还可以应用客户端验证.

检查以下链接以了解所有验证控件的想法，

http://www.w3schools.com/aspnet/aspnet_refvalidationcontrols.asp [

To validate at server server side, there are 2 ways,

Either use validation control or validate manually.

1. To apply validattion using validation control you can use CustomValidator. Using this control you can apply client side validation as well.

Check the following link to get the idea of all the validation control,

http://www.w3schools.com/aspnet/aspnet_refvalidationcontrols.asp[^]


2. To Validate manually, just check your control value from code at server side and show message on label if the data is invalid.

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