How to Dyanamic Dataset in C#
The DataSet Object represents a complete set of data, including related tables, constraints, and relationships among the tables . The DataSet contains DataTableCollection and their DataRelationCollection . The DataTableCollection contains zero or more DataTable objects.
ADO.NET enables you to create DataTable objects and add them to an existing DataSet. A DataTable is defined in the System.Data namespace and represents a single table of memory-resident data. You can set constraint information for a DataTable by using the PrimaryKey and Unique properties. The following C# Source Code shows how to fill a DataTable without using a DataSource .
using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
DataTable dt ;
DataRow dr ;
DataColumn idCoulumn ;
DataColumn nameCoulumn ;
int i = 0;
dt = new DataTable();
idCoulumn = new DataColumn("ID", Type.GetType("System.Int32"));
nameCoulumn = new DataColumn("Name", Type.GetType("System.String"));
dt.Columns.Add(idCoulumn);
dt.Columns.Add(nameCoulumn);
dr = dt.NewRow();
dr["ID"] = 1;
dr["Name"] = "Name1";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["ID"] = 2;
dr["Name"] = "Name2";
dt.Rows.Add(dr);
ds.Tables.Add(dt);
for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
MessageBox.Show(ds.Tables[0].Rows[i].ItemArray[0] + " -- " + ds.Tables[0].Rows[i].ItemArray[1]);
}
}
}
} |
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