Load data in database table to XML format and save it to DataGrid


using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Xml;

public class Form1 : System.Windows.Forms.Form {
   private System.Windows.Forms.Button btnReadXml;
   private System.Windows.Forms.Button btnWriteXml;
   private System.Windows.Forms.Button btnConfigXml;
   private System.Windows.Forms.DataGrid dataGrid1;
   private System.ComponentModel.Container components = null;

   public Form1() {
      InitializeComponent();
   }

   private void InitializeComponent() {
      this.btnReadXml = new System.Windows.Forms.Button();
      this.btnWriteXml = new System.Windows.Forms.Button();
      this.btnConfigXml = new System.Windows.Forms.Button();
      this.dataGrid1 = new System.Windows.Forms.DataGrid();
      ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
      this.SuspendLayout();

      this.btnReadXml.Location = new System.Drawing.Point(8, 8);
      this.btnReadXml.Name = "btnReadXml";
      this.btnReadXml.TabIndex = 0;
      this.btnReadXml.Text = "Read XML";
      this.btnReadXml.Click += new System.EventHandler(this.btnReadXml_Click);

      this.btnWriteXml.Location = new System.Drawing.Point(8, 48);
      this.btnWriteXml.Name = "btnWriteXml";
      this.btnWriteXml.TabIndex = 1;
      this.btnWriteXml.Text = "Write XML";
      this.btnWriteXml.Click += new System.EventHandler(this.btnWriteXml_Click);

      this.btnConfigXml.Location = new System.Drawing.Point(8, 88);
      this.btnConfigXml.Name = "btnConfigXml";
      this.btnConfigXml.TabIndex = 2;
      this.btnConfigXml.Text = "Config";
      this.btnConfigXml.Click += new System.EventHandler(this.btnConfigXml_Click);

      this.dataGrid1.DataMember = "";
      this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
      this.dataGrid1.Location = new System.Drawing.Point(104, 8);
      this.dataGrid1.Name = "dataGrid1";
      this.dataGrid1.Size = new System.Drawing.Size(184, 192);
      this.dataGrid1.TabIndex = 3;

      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 272);
      this.Controls.Add(this.dataGrid1);
      this.Controls.Add(this.btnConfigXml);
      this.Controls.Add(this.btnWriteXml);
      this.Controls.Add(this.btnReadXml);
      this.Name = "Form1";
      this.Text = "XML Demo";
      ((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
      this.ResumeLayout(false);
   }

   static void Main() {
      Application.Run(new Form1());
   }

   private void btnReadXml_Click(object sender, System.EventArgs e) {
      DataSet ds = new DataSet();
      ds.ReadXml("Employee.xml",XmlReadMode.InferSchema);
      dataGrid1.SetDataBinding(ds, "Employee");
   }

   private void btnWriteXml_Click(object sender, System.EventArgs e) {
      DataSet ds = (DataSet) dataGrid1.DataSource;
      ds.WriteXml("XMLFileOut.xml",XmlWriteMode.IgnoreSchema);    
   }

   private void btnConfigXml_Click(object sender, System.EventArgs e) {
      string connString = @"server=(local)\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
      SqlConnection conn = new SqlConnection(connString);

      SqlCommand cmd = new SqlCommand();
      cmd.Connection = conn;
      cmd.CommandText = @"select id,lastname from employee for xml auto";

      try {
         conn.Open();
         XmlReader xmlrdr = cmd.ExecuteXmlReader();
         DataSet ds = new DataSet();
         ds.ReadXml(xmlrdr,XmlReadMode.InferSchema);
         dataGrid1.DataSource=ds;
      } catch (SqlException ex) {
         MessageBox.Show (ex.Message);
      } finally  {
         conn.Close();
      }
  }
}


/* File: Employee.xml
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <employee id="1" lastname="Yin       ">
  </employee>
</NewDataSet>

*/
Related examples in the same category

1.	Read XML data from file into DataGrid
2.	Save data in DataGrid into XML file
Load data in database table to XML format and save it to DataGrid : XML DataGrid « XML « C# / C Sharp

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