form1.cs

聊天系统的经

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WindowsApplication1
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Button button5;
		private System.Windows.Forms.Button button6;
		private System.Windows.Forms.Button button7;
		private System.Windows.Forms.Button button8;
		/// <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.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.button5 = new System.Windows.Forms.Button();
			this.button6 = new System.Windows.Forms.Button();
			this.button7 = new System.Windows.Forms.Button();
			this.button8 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(80, 216);
			this.button1.Name = "button1";
			this.button1.TabIndex = 0;
			this.button1.Text = "添加";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(168, 216);
			this.button2.Name = "button2";
			this.button2.TabIndex = 1;
			this.button2.Text = "修改";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(80, 256);
			this.button3.Name = "button3";
			this.button3.TabIndex = 2;
			this.button3.Text = "删除";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button4
			// 
			this.button4.Location = new System.Drawing.Point(168, 256);
			this.button4.Name = "button4";
			this.button4.TabIndex = 3;
			this.button4.Text = "关闭";
			this.button4.Click += new System.EventHandler(this.button4_Click);
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 32);
			this.label1.Name = "label1";
			this.label1.TabIndex = 4;
			this.label1.Text = "姓名";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 96);
			this.label2.Name = "label2";
			this.label2.TabIndex = 5;
			this.label2.Text = "年龄";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 160);
			this.label3.Name = "label3";
			this.label3.TabIndex = 6;
			this.label3.Text = "单位";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(160, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.TabIndex = 7;
			this.textBox1.Text = "";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(160, 96);
			this.textBox2.Name = "textBox2";
			this.textBox2.TabIndex = 8;
			this.textBox2.Text = "";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(160, 152);
			this.textBox3.Name = "textBox3";
			this.textBox3.TabIndex = 9;
			this.textBox3.Text = "";
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(296, 32);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(352, 208);
			this.dataGrid1.TabIndex = 10;
			// 
			// button5
			// 
			this.button5.Location = new System.Drawing.Point(296, 248);
			this.button5.Name = "button5";
			this.button5.TabIndex = 11;
			this.button5.Text = "加载数据";
			this.button5.Click += new System.EventHandler(this.button5_Click);
			// 
			// button6
			// 
			this.button6.Location = new System.Drawing.Point(376, 248);
			this.button6.Name = "button6";
			this.button6.TabIndex = 12;
			this.button6.Text = "插入";
			this.button6.Click += new System.EventHandler(this.button6_Click);
			// 
			// button7
			// 
			this.button7.Location = new System.Drawing.Point(464, 248);
			this.button7.Name = "button7";
			this.button7.TabIndex = 13;
			this.button7.Text = "修改";
			this.button7.Click += new System.EventHandler(this.button7_Click);
			// 
			// button8
			// 
			this.button8.Location = new System.Drawing.Point(544, 248);
			this.button8.Name = "button8";
			this.button8.TabIndex = 14;
			this.button8.Text = "删除";
			this.button8.Click += new System.EventHandler(this.button8_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(664, 302);
			this.Controls.Add(this.button8);
			this.Controls.Add(this.button7);
			this.Controls.Add(this.button6);
			this.Controls.Add(this.button5);
			this.Controls.Add(this.dataGrid1);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.button4);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Name = "Form1";
			this.Text = "Form1";
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button4_Click(object sender, System.EventArgs e)
		{
			this.Close();
			Application.Exit();
		}

		public void Fullsh()
		{
			this.textBox1.Text="";
			this.textBox2.Text="";
			this.textBox3.Text="";
		}
		private void button1_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();

			DataRow row=ds.Tables["t_user"].NewRow();
			row["uname"]=this.textBox1.Text;
			row["uage"]=int.Parse(this.textBox2.Text);
			row["ustat"]=this.textBox3.Text;

			ds.Tables[0].Rows.Add(row);
			d.InsertUser(ds);
			this.Fullsh();
			
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();

			string uname=this.textBox1.Text;
			ds.Tables[0].DefaultView.RowFilter="uname='"+uname+"'";

			if(ds.Tables[0].DefaultView.Count>0)
			{
				ds.Tables[0].DefaultView[0]["uage"]=int.Parse(this.textBox2.Text);
				ds.Tables[0].DefaultView[0]["ustat"]=this.textBox3.Text;

			}
			d.UpdateUser(ds);
			this.Fullsh();
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();

			string uname=this.textBox1.Text;
			ds.Tables[0].DefaultView.RowFilter="uname='"+uname+"'";
			
			if(ds.Tables[0].DefaultView.Count>0)
			{
				ds.Tables[0].DefaultView[0].Delete();
			}
			d.DeleteUser(ds);
			this.Fullsh();

			
		}

		public void DataLoad()
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();
			ds=(DataSet)this.dataGrid1.DataSource;
			this.dataGrid1.DataMember=ds.Tables[0].TableName;
		}
		private void button5_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();
			this.dataGrid1.DataSource=ds;
			this.DataLoad();
		}

		private void button6_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();
			d.InsertUser((DataSet)this.dataGrid1.DataSource);
			this.DataLoad();
			
		}

		private void button7_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();

			d.UpdateUser((DataSet)this.dataGrid1.DataSource);
			this.DataLoad();
		}

		private void button8_Click(object sender, System.EventArgs e)
		{
			DataUser d=new DataUser();
			DataSet ds=d.GetAllUser();
			ds=(DataSet)this.dataGrid1.DataSource;
			string uname=ds.Tables[0].Rows[this.dataGrid1.CurrentRowIndex][0].ToString();
            
			ds.Tables[0].Rows[this.dataGrid1.CurrentRowIndex].Delete();
			d.DeleteUser((DataSet)this.dataGrid1.DataSource);
			this.DataLoad();
	
		}
	}
}