📄 form1.cs
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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace Exam6_4
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox textBox4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox textBox5;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.ListView listView1;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.ColumnHeader columnHeader1;
private System.Windows.Forms.ColumnHeader columnHeader2;
private System.Windows.Forms.ColumnHeader columnHeader3;
private System.Windows.Forms.ColumnHeader columnHeader4;
private System.Windows.Forms.ColumnHeader columnHeader5;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.textBox4 = new System.Windows.Forms.TextBox();
this.label5 = new System.Windows.Forms.Label();
this.textBox5 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.listView1 = new System.Windows.Forms.ListView();
this.button3 = new System.Windows.Forms.Button();
this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
this.columnHeader3 = new System.Windows.Forms.ColumnHeader();
this.columnHeader4 = new System.Windows.Forms.ColumnHeader();
this.columnHeader5 = new System.Windows.Forms.ColumnHeader();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(48, 10);
this.textBox1.Name = "textBox1";
this.textBox1.ReadOnly = true;
this.textBox1.Size = new System.Drawing.Size(92, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 14);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(32, 23);
this.label1.TabIndex = 1;
this.label1.Text = "学号";
//
// label2
//
this.label2.Location = new System.Drawing.Point(8, 42);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(39, 23);
this.label2.TabIndex = 3;
this.label2.Text = "姓名";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(47, 38);
this.textBox2.Name = "textBox2";
this.textBox2.ReadOnly = true;
this.textBox2.Size = new System.Drawing.Size(92, 21);
this.textBox2.TabIndex = 2;
this.textBox2.Text = "";
//
// label3
//
this.label3.Location = new System.Drawing.Point(8, 70);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(34, 23);
this.label3.TabIndex = 5;
this.label3.Text = "性别";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(48, 66);
this.textBox3.Name = "textBox3";
this.textBox3.ReadOnly = true;
this.textBox3.Size = new System.Drawing.Size(37, 21);
this.textBox3.TabIndex = 4;
this.textBox3.Text = "";
//
// label4
//
this.label4.Location = new System.Drawing.Point(8, 98);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(38, 23);
this.label4.TabIndex = 7;
this.label4.Text = "地址";
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(47, 94);
this.textBox4.Name = "textBox4";
this.textBox4.ReadOnly = true;
this.textBox4.Size = new System.Drawing.Size(126, 21);
this.textBox4.TabIndex = 6;
this.textBox4.Text = "";
//
// label5
//
this.label5.Location = new System.Drawing.Point(8, 128);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(56, 28);
this.label5.TabIndex = 9;
this.label5.Text = "入学成绩";
//
// textBox5
//
this.textBox5.Location = new System.Drawing.Point(66, 122);
this.textBox5.Name = "textBox5";
this.textBox5.ReadOnly = true;
this.textBox5.Size = new System.Drawing.Size(67, 21);
this.textBox5.TabIndex = 8;
this.textBox5.Text = "";
//
// button1
//
this.button1.Location = new System.Drawing.Point(4, 153);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(50, 22);
this.button1.TabIndex = 19;
this.button1.Text = "添加";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(58, 153);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(50, 22);
this.button2.TabIndex = 20;
this.button2.Text = "修改";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// listView1
//
this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
this.columnHeader1,
this.columnHeader2,
this.columnHeader3,
this.columnHeader4,
this.columnHeader5});
this.listView1.GridLines = true;
this.listView1.Location = new System.Drawing.Point(177, 3);
this.listView1.MultiSelect = false;
this.listView1.Name = "listView1";
this.listView1.Size = new System.Drawing.Size(291, 172);
this.listView1.TabIndex = 21;
this.listView1.View = System.Windows.Forms.View.Details;
this.listView1.SelectedIndexChanged += new System.EventHandler(this.listView1_SelectedIndexChanged);
//
// button3
//
this.button3.Location = new System.Drawing.Point(112, 153);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(50, 22);
this.button3.TabIndex = 22;
this.button3.Text = "删除";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// columnHeader1
//
this.columnHeader1.Text = "学号";
this.columnHeader1.Width = 56;
//
// columnHeader2
//
this.columnHeader2.Text = "姓名";
this.columnHeader2.Width = 66;
//
// columnHeader3
//
this.columnHeader3.Text = "性别";
this.columnHeader3.Width = 44;
//
// columnHeader4
//
this.columnHeader4.Text = "地址";
this.columnHeader4.Width = 57;
//
// columnHeader5
//
this.columnHeader5.Text = "入学成绩";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(461, 180);
this.Controls.Add(this.button3);
this.Controls.Add(this.listView1);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.label5);
this.Controls.Add(this.textBox5);
this.Controls.Add(this.label4);
this.Controls.Add(this.textBox4);
this.Controls.Add(this.label3);
this.Controls.Add(this.textBox3);
this.Controls.Add(this.label2);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.label1);
this.Controls.Add(this.textBox1);
this.Name = "Form1";
this.Text = "学生数据维护";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
SqlConnection myConnection;
SqlCommand sqlCommand;
private void Form1_Load(object sender, System.EventArgs e)
{
myConnection = new SqlConnection();
myConnection.ConnectionString = "server=localhost;uid=sa;pwd=;database=xsgl";
sqlCommand=new SqlCommand();
sqlCommand.Connection=myConnection;
sqlCommand.CommandType = CommandType.Text;
sqlCommand.CommandText = "select * from student";
myConnection.Open();
SqlDataReader dReader = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection);
while(dReader.Read())
{
ListViewItem newItem=listView1.Items.Add(dReader["studID"].ToString().Trim());
newItem.SubItems.Add(dReader["studName"].ToString().Trim());
newItem.SubItems.Add(dReader["studSex"].ToString().Trim());
newItem.SubItems.Add(dReader["studAddress"].ToString().Trim());
newItem.SubItems.Add(dReader["enterScore"].ToString().Trim());
}
dReader.Close();
}
private void listView1_SelectedIndexChanged(object sender, System.EventArgs e)
{
if(listView1.SelectedItems.Count>0)
{
textBox1.Text=listView1.SelectedItems[0].Text;
textBox2.Text=listView1.SelectedItems[0].SubItems[1].Text;
textBox3.Text=listView1.SelectedItems[0].SubItems[2].Text;
textBox4.Text=listView1.SelectedItems[0].SubItems[3].Text;
textBox5.Text=listView1.SelectedItems[0].SubItems[4].Text;
}
}
private void button1_Click(object sender, System.EventArgs e)
{
if(button1.Text=="添加")
{
button1.Text="保存";
textBox1.Text="";textBox2.Text="";
textBox3.Text="";textBox4.Text="";
textBox5.Text="";textBox1.Focus();
textBox1.ReadOnly=false;
textBox2.ReadOnly=false;
textBox3.ReadOnly=false;
textBox4.ReadOnly=false;
textBox5.ReadOnly=false;
button2.Enabled=false;
button3.Enabled=false;
}
else
{
sqlCommand.CommandText = "insert into student values('"
+textBox1.Text+"','"
+textBox2.Text+"','"
+textBox3.Text+"','"
+textBox4.Text+"',"
+textBox5.Text+")";
myConnection.Open();
int cmdresults = sqlCommand.ExecuteNonQuery();
myConnection.Close();
if(cmdresults==1)
{
textBox1.ReadOnly=true;
textBox2.ReadOnly=true;
textBox3.ReadOnly=true;
textBox4.ReadOnly=true;
textBox5.ReadOnly=true;
button2.Enabled=true;
button3.Enabled=true;
ListViewItem newItem=listView1.Items.Add(textBox1.Text);
newItem.SubItems.Add(textBox2.Text);
newItem.SubItems.Add(textBox3.Text);
newItem.SubItems.Add(textBox4.Text);
newItem.SubItems.Add(textBox5.Text);
button1.Text="添加";
MessageBox.Show("插入数据成功!");
}
else
MessageBox.Show("插入数据失败!");
}
}
private void button2_Click(object sender, System.EventArgs e)
{
if(listView1.SelectedItems.Count>0)
{
if(button2.Text=="修改")
{
button2.Text="保存";
textBox2.ReadOnly=false;
textBox3.ReadOnly=false;
textBox4.ReadOnly=false;
textBox5.ReadOnly=false;
button2.Enabled=false;
button3.Enabled=false;
textBox2.Focus();
}
else
{
string studID=listView1.SelectedItems[0].Text;
sqlCommand.CommandText = "update student set studName='"+textBox2.Text+"',"+
"studSex='"+textBox3.Text+"',"+
"studAddress='"+textBox4.Text+"',"+
"enterScore="+textBox5.Text+
" where studID='"+studID+"'";
myConnection.Open();
int cmdresults=sqlCommand.ExecuteNonQuery();
myConnection.Close();
if(cmdresults==1)
{
textBox2.ReadOnly=true;
textBox3.ReadOnly=true;
textBox4.ReadOnly=true;
textBox5.ReadOnly=true;
button2.Enabled=true;
button3.Enabled=true;
listView1.SelectedItems[0].SubItems[1].Text=textBox2.Text;
listView1.SelectedItems[0].SubItems[2].Text=textBox3.Text;
listView1.SelectedItems[0].SubItems[3].Text=textBox4.Text;
listView1.SelectedItems[0].SubItems[4].Text=textBox5.Text;
button2.Text="修改";
MessageBox.Show("修改数据成功!");
}
else
MessageBox.Show("修改数据失败!");
}
}
}
private void button3_Click(object sender, System.EventArgs e)
{
if(listView1.SelectedItems.Count>0)
{
string studID=listView1.SelectedItems[0].Text;
sqlCommand.CommandText = "delete from student where studID='"+studID+"'";
myConnection.Open();
sqlCommand.ExecuteNonQuery();
myConnection.Close();
listView1.Items.Remove(listView1.SelectedItems[0]);
textBox1.Text="";
textBox2.Text="";
textBox3.Text="";
textBox4.Text="";
}
}
}
}
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