无法将类型“System.Data.SqlClient.SqlConnection”隐式转换为“string"

[yu6325862]

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;


namespace lxoo
{
public partial class _Default : System.Web.UI.Page
{


SqlConnection strConl;
SqlCommand strCom;
string strCon = "Data Source=.;Database=master;Uid=sa;Pwd=yu";


protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
bind();
}

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
bind();
}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string strSql = "delete from ygInfo where id = '" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
strCon = new SqlConnection(strCon );
strCom = new SqlCommand (strSql ,strCon );
strCon .open();
strCom .EndExecuteNonQuery ();
strCon .close();
bind();
}
public void bind ()
{

string strSql = "select * from ygInfo";
strCon = new SqlConnection (strCon );
SqlDataAdapter da = new SqlDataAdapter (strSql ,strCon );
DataSet ds = new DataSet ();
strCon .open();
da.Fill (ds,ygInfo);
GridView1 .DataSource = ds;
GridView1 .DataKeyNames = new string []{"id"};
GridView1 .DataBind ();
}

}
}

[Jinglecat]

strConl = new SqlConnection (strCon );
SqlDataAdapter da = new SqlDataAdapter (strSql ,strConl );

[chen_ya_ping]

strCon = new SqlConnection(strCon );
===》strConl= new SqlConnection(strCon );

[wwfgu00ing]

SqlConnection con =new SqlConnection (constr);

SqlConmand cmd=new SqlConmand (sql,con);

SqlDataAdapter da=new SqlDataAdapter (cmd);

[wwfgu00ing]

SqlConnection con =new SqlConnection (constr);

SqlConmand cmd=new SqlConmand (sql,con);

SqlDataAdapter da=new SqlDataAdapter (cmd);

[wangdj2]

SqlConnection strConl;
string strCon = "Data Source=.;Database=master;Uid=sa;Pwd=yu";
两个变量名称重复，重新命名其中的一个名字

[shirley9226]

你sqlconnection定义的是SqlConnection strConl;
而你获取链接的代码是：strCon = new SqlConnection(strCon );
肯定是提示这个错误啊，你代码错了
改成 strConl= new SqlConnection(strCon );

[dalmeeme]

string strSql = "select * from ygInfo";
strCon = new SqlConnection(strSql);
构造方法的参数应是strSql。

[wuyq11]

using(SqlConnection Conn = new SqlConnection(strCon );
{
strCom = new SqlCommand (strSql ,Conn);
}

strConl = new SqlConnection (strCon );

[jlds123]

SqlConnection conn= new SqlConnection (strCon );

[请叫我小码哥]

 SqlConnection strConl;
        SqlCommand strCom;
        string strCon = "Data Source=.;Database=master;Uid=sa;Pwd=yu";


        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
            }

        }

        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
            bind();
        }

        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            string strSql = "delete from ygInfo where id = '" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
            strConl = new SqlConnection(strCon);
            strCom = new SqlCommand(strSql, strConl);
            strConl.Open();
            strCom.ExecuteNonQuery();
            strConl.Close();
            bind();
        }
        public void bind()
        {

            string strSql = "select * from ygInfo";
            strConl = new SqlConnection(strCon);
            SqlDataAdapter da = new SqlDataAdapter(strSql, strCon);
            DataSet ds = new DataSet();
            strConl.Open();
            da.Fill(ds, "ygInfo");
            GridView1.DataSource = ds;
            GridView1.DataKeyNames = new string[] { "id" };
            GridView1.DataBind();
        }

楼主上哪copy的代码。