类库页面代码：
using System;
using System.Data;
using System.Configuration;
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.Sql;
using System.Data.SqlClient;
///
/// data 的摘要说明
///
public class data
{
public static string strSQLConn = System.Configuration.ConfigurationManager.AppSettings["sqlConnString"].ToString();
publicDataSet datasearch(string sqls)
{
SqlConnection cn = new SqlConnection(strSQLConn);
SqlCommand querycmd = new SqlCommand(sqls, cn);
SqlDataAdapter adapter = new SqlDataAdapter(sqls, cn);
DataSet dset = new DataSet();
adapter.Fill(dset, "sqls");
cn.Open();
querycmd.ExecuteNonQuery();
cn.Close();
return dset;
}
public DataSet dataup(string sqlu)
{
SqlConnection cn = new SqlConnection(strSQLConn);
SqlCommand cmd = new SqlCommand(sqlu, cn);
SqlDataAdapter adapter = new SqlDataAdapter(sqlu, cn);
DataSet dset = new DataSet();
adapter.Fill(dset, "sqlu");
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
return dset;
}
publicDataSet datadelet(string sqld)
{
SqlConnection cn = new SqlConnection(strSQLConn);
SqlCommand cmd = new SqlCommand(sqld, cn);
SqlDataAdapter adapter = new SqlDataAdapter(sqld, cn);
DataSet dset = new DataSet();
adapter.Fill(dset, "sqld");
return dset;
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
}
}
后台调用代码：
using System;
using 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.Sql;
using System.Data.SqlClient;
public partial class Admini : System.Web.UI.Page
{
public static string strSQLConn = System.Configuration.ConfigurationManager.AppSettings["sqlConnsSring"].ToString();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
}
Panel1.Visible = false;
Panel2.Visible = false;
Panel3.Visible = false;
}
protected void zhglbt_Click(object sender, EventArgs e)
{
PlaceHolder1.Controls.Add(Panel1);
Panel1.Visible = true;
data one = new data();//data”的类型初始值设定项引发异常
GridView1.DataSource = one.datasearch("select * from register");
GridView1.DataBind();
我运行时老是提示 “data”的类型初始值设定项引发异常
请问 我的错误在哪？帮我解决 谢谢！
}
恩 为空 我有 web.config
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