form1.cs

原代码详细说明是关于c++方面的希望可以帮助大家使用

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace Exam6_12
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Button button1;
		/// <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.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.button1 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// dataGrid1
			// 
			this.dataGrid1.CaptionVisible = false;
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(5, 9);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.RowHeadersVisible = false;
			this.dataGrid1.Size = new System.Drawing.Size(384, 159);
			this.dataGrid1.TabIndex = 0;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(74, 177);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(113, 24);
			this.button1.TabIndex = 1;
			this.button1.Text = "保存成XML文件";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(392, 206);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.dataGrid1);
			this.Name = "Form1";
			this.Text = "写XML文件";
			this.Load += new System.EventHandler(this.Form1_Load);
			((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 DataSet dataSet;
		private void Form1_Load(object sender, System.EventArgs e)
		{
			SqlConnection myConnection = new SqlConnection();
			myConnection.ConnectionString = "server=localhost;uid=sa;pwd=;database=xsgl";
			SqlCommand sqlCommand=new SqlCommand();
			sqlCommand.Connection=myConnection;;
			sqlCommand.CommandType = CommandType.Text;
			sqlCommand.CommandText = "select * from student";
			SqlDataAdapter sqlDataAdapter=new SqlDataAdapter(); 
			dataSet=new DataSet();
			sqlDataAdapter.SelectCommand=sqlCommand;
			sqlDataAdapter.Fill(dataSet,"Student");
			dataGrid1.DataSource=dataSet;
			dataGrid1.DataMember="Student"; 
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			SaveFileDialog sf=new SaveFileDialog();
			sf.Filter="XML文件(*.xml)|*.xml|所有文件(*.*)|*.*";
			sf.DefaultExt="xml";
			if(sf.ShowDialog()==DialogResult.OK)
			{
               dataSet.WriteXml(sf.FileName);   
			}
		}
	}
}