CustomValidator的提交问题
我的一个表单上有两个按钮，我希望只有在点击一个按钮的情况下验证表单，另一个则不要验证表单，该怎么设置
还有我在表单中加了个CustomValidator控件检查是否用户名重名，可是点击提交按钮后，提交成功，同时验证失败的信息也显示出来了，这是怎么回事，既然失败了怎么还可以提交啊？
[解决办法]
<%@ page language= "C# " %>
<html>
<head id= "Head1 " runat= "server ">
<title> Button.ValidationGroup Example </title>
</head>
<body>
<form id= "Form1 " runat= "server ">
<h3> Button.ValidationGroup Example </h3>
<asp:label id= "NameLabel "
text= "Enter your name: "
runat=Server>
</asp:label>
 
<asp:textbox id= "NameTextBox "
runat=Server>
</asp:textbox>
 
<asp:requiredfieldvalidator id= "RequiredFieldValidator1 "
controltovalidate= "NameTextBox "
validationgroup= "PersonalInfoGroup "
errormessage= "Enter your name. "
runat=Server>
</asp:requiredfieldvalidator>
<br /> <br />
<asp:label id= "AgeLabel "
text= "Enter your age: "
runat=Server>
</asp:label>
 
<asp:textbox id= "AgeTextbox "
runat=Server>
</asp:textbox>
 
<asp:requiredfieldvalidator id= "RequiredFieldValidator2 "
controltovalidate= "AgeTextBox "
validationgroup= "PersonalInfoGroup "
errormessage= "Enter your age. "
runat=Server>
</asp:requiredfieldvalidator>
<br /> <br />
<!--When Button1 is clicked, only validation
controls that are a part of PersonalInfoGroup
are validated.-->
<asp:button id= "Button1 "
text= "Validate "
causesvalidation=true
validationgroup= "PersonalInfoGroup "
runat=Server />
<br /> <br />
<asp:label id= "CityLabel "
text= "Enter your city of residence: "
runat=Server>
</asp:label>
 
<asp:textbox id= "CityTextbox "
runat=Server>
</asp:textbox>
 
<asp:requiredfieldvalidator id= "RequiredFieldValidator3 "
controltovalidate= "CityTextBox "
validationgroup= "LocationInfoGroup "
errormessage= "Enter a city name. "
runat=Server>
</asp:requiredfieldvalidator>
<br /> <br />
<!--When Button2 is clicked, only validation
controls that are a part of LocationInfoGroup
are validated.-->
<asp:button id= "Button2 "
text= "Validate "
causesvalidation=true
validationgroup= "LocationInfoGroup "
runat=Server />
</form>
</body>
</html>
[解决办法]
1. 设置button的CausesValidation=false
2. 验证用户名重名要回到服务器端验证，当然要回传了
不能这么验证。
如果要不回传，可以自己写验证控件或者用ajax
[解决办法]
第一个问题，可以设另外那个按钮的验证属性为False
[解决办法]
有两点:
1.确定CustomValidator和你的提交Button在一个组里
2.验证是否用户名存在必须回传访问数据库.验证和数据的提交是同时的,所以会出现提交完成错误同时出来的情况.
解决如下:在你的访问数据库的方法里加一个if 语句,如下:
if(CustomValidator.isvaisd)
{
sqlconnecton new...
//你连接数据库的东西.
}
else
{
CustomValidator.errroMessage= "用户名已存在! ";
}
如果CustomValidator访问数据库的数据在同一方法中,方法如下:
在你的Command( "insert .... ")语句前进if 判断就行.
