函數ExecuteNonQuery（）可以對數據庫執行更新，插入，刪除操作，並返回操作影響的行數，若執行語句不是SQL語句，則返回-1，應用實例如下：
配置文件信息：
<connectionStrings>
<add name ="SQLCONNECTIONSTRING" connectionString =" data Source = localhost;database = hrmbook;user id = sa;pwd = sa" providerName = "System.Data.SqlClient"></add>
</connectionStrings>
程序代碼如下：
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.SqlClient;
public partial class DataQuery : System.Web.UI.Page
{
private string myConnectionString = ConfigurationManager.ConnectionStrings["SQLCONNECTIONSTRING"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TestDataQuery();
Response.End();
}
}
private void TestDataQuery()
{
//創建SqlConnection
SqlConnection myConnection = new SqlConnection(myConnectionString);
string cmdText = "INSERT INTO 職員基本信息表(內部編號,職員編號,姓名,性別) VALUES(80,'sr8888','newUser','男')";
SqlCommand myCommand = new SqlCommand(cmdText, myConnection);
SqlDataReader mydr;
string drcmdText = "SELECT TOP 5 * FROM 職員基本信息表 ORDER BY 內部編號 DESC";
try
{
//打開數據庫鏈接
myConnection.Open();
//插入數據
int nCount = myCommand.ExecuteNonQuery();
Response.Write("插入" + nCount.ToString() + "條新記錄.<br>");
//顯示數據
myCommand.CommandText = drcmdText;
mydr = myCommand.ExecuteReader();
PrintData(mydr);
//修改數據
cmdText = "UPDATE 職員基本信息表 SET 性別 = '女' WHERE 內部編號 = 80";
myCommand.CommandText = cmdText;
myCommand.ExecuteNonQuery();
Response.Write("修改" + nCount.ToString() + "條新記錄.<br>");
myCommand.CommandText = drcmdText;
mydr = myCommand.ExecuteReader();
PrintData(mydr);
//刪除數據
cmdText = "DELETE 職員基本信息表 WHERE 內部編號 = 80";
myCommand.CommandText = cmdText;
myCommand.ExecuteNonQuery();
Response.Write("刪除" + nCount.ToString() + "條新記錄.<br>");
//顯示數據
myCommand.CommandText = drcmdText;
mydr = myCommand.ExecuteReader();
PrintData(mydr);
}
catch (SqlException sqlex)
{
Response.Write(sqlex.Message + "<br>");
}
finally
{
myConnection.Close();
}
}
private void PrintData(SqlDataReader mydr)
{
while (mydr.Read())
{
//向列表中添加Item項
Response.Write(mydr["姓名"] + "----" +
//讀取姓名
mydr["性別"] + "<br>");
}
mydr.Close();
}
}