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ÎÒ½«Ò»¸ösqlÁ´½Óµ½Êý¾Ý¿â£¬¸ÃÊý¾Ý¿âÃûΪmaster(ϵͳÊý¾Ý¿â)
then ¸øÊý¾Ý¿âÌí¼ÓÐÂ±í£¬½¨Á¢Èý¸ökey£ºuserid(int),name(char(10)),password(char(10))
ÔÚ´°ÌåÖÐŪÈý¸ötextbox¿Ø¼þ£¬·Ö±ð¶¨ÒåNameÊôÐÔΪuserid,name,password;
ÔÙÀ´Ò»¸öbutton
ÒÔÏÂÊÇForm1.csÖеĴúÂë
 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Data.OleDb;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Runtime.InteropServices;
using System.Configuration;
namespace Str
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void submit_Click(object sender, EventArgs e)
{
/*
* connect to Sql Server
* ·½·¨Ò»£ºÐ´ÔÚÕâÀï
*/
//string strConnection = "Data Source=ZRQ-PC;";
//strConnection += "Initial Catalog=master;Integrated Security=True";
// SqlConnection objConnection = new SqlConnection(strConnection);
/*
* ·½·¨¶þ£º
* Õâ¸ö·½·¨Îª¹¤³ÌÌí¼ÓÁËн¨Ïî“Ó¦ÓóÌÐòÅäÖÃÎļþ”
* ½«ÉÏÃæµÄÄǶÎдÔÚApp.configÀï
*/
string strConnection = ConfigurationSettings.AppSettings["connectionstring"];
SqlConnection objConnection = new SqlConnection(strConnection);
/************************************************************************/
if (name.Text == "")
MessageBox.Show("ÇëÊäÈëÐÕÃû!", "Ìáʾ", 0);
else
{
objConnection.Open();
SqlCommand cmd = new SqlCommand("select * from judging where userid='" + userid.Text.Trim() + "'", objConnection);
/*
***********************************************************************************************