如何使用ASP.NET中的引导验证程序从数据库验证用户名 [英] How to validate a username from database using bootstrap validator in ASP.NET
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问题描述
I want to validate a username from database using bootstrap validator in asp.net. This is some code i tried but not working... When i put remote, the username field is always invalid. Is this correct way to do so?
我尝试过:
What I have tried:
<pre>username: {
validators: {
remote: {
url: '/Registration.aspx/CheckUsername',
type:'POST',
data: '{user: "' + $("#<%=username.ClientID%>")[0].value + '" }',
message: 'The username is not available.',
},
notEmpty: {
message: 'Please fill in your username.'
}
}
},
---- backend
< br $>
----backend
[System.Web.Services.WebMethod]
public static string CheckUsername(string user)
{
string retval = "";
SqlConnection bbmsConn;
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
bbmsConn = new SqlConnection(connStr);
bbmsConn.Open();
SqlCommand cmd = new SqlCommand("select username from Accounts where username=@username", bbmsConn);
cmd.Parameters.AddWithValue("@username", user);
SqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows)
{
retval = "true";
}
else
{
retval = "false";
}
return retval;
}
推荐答案
(#<%= username.ClientID%>)[0] .value + ''}',
消息:'用户名不可用。',
},
notEmpty:{
message:'请填写您的用户名。 '
}
}
},
("#<%=username.ClientID%>")[0].value + '" }', message: 'The username is not available.', }, notEmpty: { message: 'Please fill in your username.' } } },
---- backend
----backend
[System.Web.Services.WebMethod]
public static string CheckUsername(string user)
{
string retval = "";
SqlConnection bbmsConn;
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
bbmsConn = new SqlConnection(connStr);
bbmsConn.Open();
SqlCommand cmd = new SqlCommand("select username from Accounts where username=@username", bbmsConn);
cmd.Parameters.AddWithValue("@username", user);
SqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows)
{
retval = "true";
}
else
{
retval = "false";
}
return retval;
}
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