using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace UpdateTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
bool CheckInfo()
{
if (this.txtUserSex.Text.Trim() == "")
{
MessageBox.Show ("学号不能为空");
return false;
}
else if (this.txtUserName.Text.Trim() == "")
{
MessageBox.Show("姓名不能为空");
return false;
}
return true;
}
private void button1_Click(object sender, EventArgs e)
{
if (CheckInfo())
{
string userSex=this.txtUserSex.Text.Trim();
string userName=this.txtUserName.Text.Trim();
string cnnString = "data source=(local);database=CTestDB;Integrated Security=true";
SqlConnection cnn = new SqlConnection(cnnString);
String sqlStr = "update Student set Stu_sex='" + userSex + "'" + "where Stu_name='" + userName + "'";
cnn.Open();
SqlCommand cmd = new SqlCommand(sqlStr, cnn);
int RecordsAffected = cmd.ExecuteNonQuery();
cnn.Close();
MessageBox.Show("更新数据位" + RecordsAffected);
}
}
private void button2_Click(object sender, EventArgs e)
{
if (CheckInfo())
{
string userSex= this.txtUserSex.Text.Trim();
string userName = this.txtUserName.Text.Trim();
string cnnString = "data source=(local);database=CTestDB;Integrated Security=true";
string sqlStr = "update Student set Stu_sex=@userSex where Stu_name=@userName";
SqlConnection cnn = new SqlConnection(cnnString);
SqlCommand cmd = new SqlCommand(sqlStr, cnn);
cmd.Parameters.Add(new SqlParameter("@userSex", userSex));
cmd.Parameters.Add(new SqlParameter("@userName", userName));
cnn.Open();
int RecordAffected = cmd.ExecuteNonQuery();
cnn.Close();
MessageBox.Show("更新数据为" + RecordAffected);
}
}
}
}
