用户登陆模块的编写

public DataSet User_Login(string email,string pwd)
{
SqlCommand comm=new SqlCommand ("UserLogin",this.conn);
comm.CommandType=CommandType.StoredProcedure;
SqlDataAdapter da=new SqlDataAdapter();
da.SelectCommand =comm;

da.SelectCommand.Parameters.Add(new SqlParameter("@Email",SqlDbType.NVarChar,50));
da.SelectCommand.Parameters["@Email"].Value=email;
da.SelectCommand.Parameters.Add(new SqlParameter("@Password",SqlDbType.NVarChar,50));
da.SelectCommand.Parameters["@Password"].Value=pwd;

DataSet ds=new DataSet();
da.Fill(ds,"a");
return ds;

}

UserLogin存储过程

CREATE PROCEDURE UserLogin
@Email NVARCHAR(50)=NULL,
@Password NVARCHAR(50)=NULL
AS
SELECT * FROM Users WHERE Email=@Email AND Password =@Password
GO