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资源说明：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 随机点名器
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
string a = "";
private void Form2_Load(object sender, EventArgs e)
{
// TODO: 这行代码将数据加载到表“dataSet1.学生信息”中。您可以根据需要移动或删除它。
// this.学生信息TableAdapter.Fill(this.dataSet1.学生信息);
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
String constr = "Server = 10.100.102.3;user id = dotnet;pwd = 123;database = wgz";
//String constr = @"data source = .;user id = ;pwd = ;database = TEST";
SqlConnection con = new SqlConnection();
con.ConnectionString = constr;
con.Open();
// string dianming = "SELECT top 1 [学号] FROM [学生信息] ORDER BY NEWID()";
string sql = "SELECT top 1 * FROM [学生信息] ORDER BY NEWID()";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
da.Fill(ds, "cs");
dataGridView1.DataSource = ds.Tables["cs"];
a = ds.Tables[0].Rows[0][1].ToString();
con.Close();
}
private void button2_Click(object sender, EventArgs e)
{
string b = a;
String constr = "Server = 10.100.102.3;user id = dotnet;pwd = 123;database = wgz";
SqlConnection con = new SqlConnection();
con.ConnectionString = constr;
con.Open();
string chuqin = "update [学生信息] set [出勤]=[出勤]+1 where [学号]='"+b+"'";
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = chuqin;
int i1 = cmd.ExecuteNonQuery();
string chuli = "update [学生信息] set [平时成绩] = [平时成绩] + 3 where [学号]='" + b + "'";
SqlCommand com = new SqlCommand();
com.Connection = con;
com.CommandText = chuli;
int i2 = com.ExecuteNonQuery();
string sql = "SELECT * FROM [学生信息] where [学号]='" + b + "'";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
da.Fill(ds, "cs");
dataGridView1.DataSource = ds.Tables["cs"];
con.Close();
}
private void button3_Click(object sender, EventArgs e)
{
string b = a;
String constr = "Server = 10.100.102.3;user id = dotnet;pwd = 123;database = wgz";
SqlConnection con = new SqlConnection();
con.ConnectionString = constr;
con.Open();
string kuangke = "update [学生信息] set [旷课]=[旷课]+1 where [学号]='" + b + "'";
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = kuangke;
int i1 = cmd.ExecuteNonQuery();
string chuli = "update [学生信息] set [平时成绩] = [平时成绩] - 5 where [学号]='" + b + "'";
SqlCommand com = new SqlCommand();
com.Connection = con;
com.CommandText = chuli;
int i2 = com.ExecuteNonQuery();
string sql = "SELECT * FROM [学生信息] where [学号]='" + b + "'";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
da.Fill(ds, "cs");
dataGridView1.DataSource = ds.Tables["cs"];
con.Close();
}
private void button4_Click(object sender, EventArgs e)
{
string b = a;
String constr = "Server = 10.100.102.3;user id = dotnet;pwd = 123;database = wgz";
SqlConnection con = new SqlConnection();
con.ConnectionString = constr;
con.Open();
string qingjia = "update [学生信息] set [请假]=[请假]+1 where [学号]='" + b + "'";
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = qingjia;
int i1 = cmd.ExecuteNonQuery();
string chuli = "update [学生信息] set [平时成绩] = [平时成绩] - 1 where [学号]='" + b + "'";
SqlCommand com = new SqlCommand();
com.Connection = con;
com.CommandText = chuli;
int i2 = com.ExecuteNonQuery();
string sql = "SELECT * FROM [学生信息] where [学号]='" + b + "'";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
da.Fill(ds, "cs");
dataGridView1.DataSource = ds.Tables["cs"];
con.Close();
}
private void button5_Click(object sender, EventArgs e)
{
String constr = "Server = 10.100.102.3;user id = dotnet;pwd = 123;database = wgz";
SqlConnection con = new SqlConnection();
con.ConnectionString = constr;
con.Open();
string sql = "SELECT * FROM [学生信息] ORDER BY [学号]";
SqlDataAdapter da = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
da.Fill(ds, "cs");
dataGridView1.DataSource = ds.Tables["cs"];
con.Close();
}
private void button7_Click(object sender, EventArgs e)
{
Form1 form = new Form1();
form.Show();
this.Hide();
}
}
}
基于C# C/S的随机点名器
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