我是这样写的，可是不显示查询结果，大家帮我看看
sing System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Web.Configuration;
public partial class Default3 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection();
ConnectionStringSettings connsetting = ConfigurationManager.ConnectionStrings["ConnectionString2"];
conn.ConnectionString = connsetting.ConnectionString;
SqlCommand cmd = new SqlCommand("sp_EmployInfo",conn);
cmd.CommandType = CommandType.StoredProcedure;
conn.Open();
cmd.Parameters.Add(new SqlParameter("@TitleOfCourtesy", SqlDbType.NVarChar, 25,"this.TextBox1.Text"));
cmd.Parameters.Add(new SqlParameter("@Country", SqlDbType.NVarChar, 15, "this.DropDownList1.DataTextField"));
cmd.Parameters["@TitleOfCourtesy"].Value = this.TextBox1.Text;
cmd.Parameters["@Country"].Value = this.DropDownList1.DataTextField;
GridView1.DataSource = cmd.ExecuteReader();
GridView1.DataBind();
conn.Close();
}
}
存储过程
ALTER PROCEDURE sp_EmployInfo
@TitleOfCourtesy nvarchar(25),
@Country nvarchar(15)
AS
select *from Employees where TitleOfCourtesy=@TitleOfCourtesy and Country=@Country
------解决方案--------------------------------------------------------
cmd.Parameters["@Country"].Value = this.DropDownList1.DataTextField;
改成
cmd.Parameters["@Country"].Value = this.DropDownList1.SelectedItem.text;
然后断点跟踪一下
this.DropDownList1.DataTextField 获取的是一个绑定字段 而不是值
------解决方案--------------------------------------------------------
- C# code
SqlConnection conn = new SqlConnection(); ConnectionStringSettings connsetting = ConfigurationManager.ConnectionStrings["ConnectionString2"]; conn.ConnectionString = connsetting.ConnectionString; SqlCommand cmd = new SqlCommand("sp_EmployInfo", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@TitleOfCourtesy", this.TextBox1.Text); cmd.Parameters.Add("@Country", this.DropDownList1.SelectedItem.Text); conn.Open(); GridView1.DataSource = cmd.ExecuteReader(); GridView1.DataBind(); conn.Close();