您好我有一个存储过程和数据库连接。我在我的网站上有其他类似的代码,工作得很好,但对于我的生活,我无法让这个工作。我希望登录的用户名能够作为参数传递。我可以将它存储在会话变量中。 我不确定如何将它从会话变量传递到参数,所以我将它放入标签并以这种方式发送。它表明它已经走得那么远,但每次我只是得到“没有找到”的信息 我检查了存储过程,这对我来说似乎很好。下面是代码和存储过程!请帮忙!
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
public partial class RescueOnlyPages_EditRescueDetails : System.Web.UI.Page
{
protected void page_PreInit(object sender, EventArgs e)
{
MembershipUser user;
try
{
if (User.Identity.IsAuthenticated)
{
// Set theme in preInit event
user = Membership.GetUser(User.Identity.Name);
Session["user"] = user;
}
}
catch (Exception ex)
{
string msg = ex.Message;
//Log error here
// We have set theme in web.config to Neutral so if there is
// an error with setting themes, an incorrect theme wont be displayed to a customer
}
}
protected void Page_Load(object sender, EventArgs e)
{
userLabel.Text = Session["user"].ToString();
SqlDataReader myDataReader = default(SqlDataReader);
SqlConnection MyConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["RescueAnimalsIrelandConnectionString"].ConnectionString);
SqlCommand command = new SqlCommand("sp_EditRescueDetails", MyConnection);
if (!User.Identity.IsAuthenticated)
{
}
else
{
command.Parameters.AddWithValue("@user", userLabel.Text.Trim());
}
try
{
MyConnection.Open();
command.CommandType = CommandType.StoredProcedure;
myDataReader = command.ExecuteReader(CommandBehavior.CloseConnection);
myDataReader.Read();
GridViewED.DataSource = myDataReader;
GridViewED.DataBind();
if (GridViewED.Rows.Count >= 1)
{
GridViewED.Visible = true;
lblMsg.Visible = false;
}
else if (GridViewED.Rows.Count < 1)
{
GridViewED.Visible = false;
lblMsg.Text = "Your search criteria returned no results.";
lblMsg.Visible = true;
}
MyConnection.Close();
}
catch (SqlException SQLexc)
{
Response.Write("Read Failed : " + SQLexc.ToString());
}
}
}
存储过程
ALTER PROC [dbo].[sp_EditRescueDetails]
(
@user nvarchar(50)
)
AS
BEGIN
SELECT [PostalAddress], [Telephone_No], [Website], [Email]
FROM [RescueDetails]
Where [UserName] = @user
End
编辑 * 如果我更改存储过程并删除 '哪里[UserName] = @user' 它带来了每个用户细节没有任何问题,所以我认为它可能与这条线或 command.Parameters.AddWithValue(“@ user”,userLabel.Text.Trim()); 引起我问题的那条线
答案 0 :(得分:6)
尝试设置
command.CommandType = CommandType.StoredProcedure;
之前
MyConnection.Open();
如果您要将myDataReader.Read();
设置为gridview的数据源,也不要致电myDataReader
。这将使它跳过一行,如果结果只有一行,那么网格将不显示任何内容。
答案 1 :(得分:0)
添加文本类型(varchar,nvarchar)的命令参数时,在提供文本值的长度时,ADO.NET的效果最佳。 尝试添加参数,然后设置length属性,然后分配value属性,而不是使用AddWithValue。