ADO.NET之dataadapter对象填充dataset对象

 

执行效果

前台代码

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

   
   


   

   

       
           
               
           
       
   
   

   

 

后台代码

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.SqlClient;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            //bind();
            SqlConnection myConn = GetConnection();
            myConn.Open();
            string sqlStr = "select * from t001 ";
            SqlDataAdapter myDa = new SqlDataAdapter(sqlStr, myConn);
            DataSet myDs = new DataSet();
            myDa.Fill(myDs);
            for (int i = 0; i <= myDs.Tables[0].Rows.Count - 1; i++)
            {
                myDs.Tables[0].Rows[i]["text"] = SubStr(Convert.ToString(myDs.Tables[0].Rows[i]["text"]), 5);

            }
            GridView1.DataSource = myDs;
            GridView1.DataKeyNames = new string[] { "bukrs" };
            GridView1.DataBind();
            myDa.Dispose();
            myDs.Dispose();
            myConn.Close();
        }   
    }
    public SqlConnection GetConnection()
    {
        string myStr = ConfigurationManager.AppSettings["ConnectionString"].ToString();
        SqlConnection myConn = new SqlConnection(myStr);
        return myConn;
    }
       public string SubStr(string sString, int nLeng)
    {
        if (sString.Length <= nLeng)
        {
            return sString;
        }
        string sNewStr = sString.Substring(0, nLeng);
        sNewStr = sNewStr + "...";
        return sNewStr;
    }
}

 

配置代码

 
   
 
 
 
 
   
   
   
   
   
 

 

注意：

for (int i = 0; i <= myDs.Tables[0].Rows.Count - 1; i++)
            {
                myDs.Tables[0].Rows[i]["text"] = SubStr(Convert.ToString(myDs.Tables[0].Rows[i]["text"]), 5);

            }

是对myds循环修改内容的，将过长内容使用*号体现在table中