How to Create a DataTable And Add it to a DataSet

In this article we are going to see how to create a DataTable and add it to a DataSet.

Example :

using System;
using System.Data;

namespace CreateDataTable
{
classProgram
    {
static void Main(string[] args)
        {
DataSet objDs = newDataSet();

// Add a DataTable to DataSet directly
DataTable objDt1 = objDs.Tables.Add("Table 1");
//  add some columns here

// Creating the table and adding it to the DataSet
DataTable objDt2 = newDataTable("Table 2");
//  add some columns here
            objDs.Tables.Add(objDt2);

// Add multiple DataTables to the DataSet
DataTable objDt3 = newDataTable("Table 3");
DataTable objDt4 = newDataTable("Table 4");
//  add some columns here
            objDs.Tables.AddRange(newDataTable[] { objDt3, objDt4 });

Console.WriteLine("DataSet has {0} DataTables \n", objDs.Tables.Count);
foreach (DataTable objDt in objDs.Tables)
Console.WriteLine("{0}", objDt.TableName);

Console.WriteLine("\nPress any key to continue.");
Console.ReadLine();
 
        }
    }
}

In this example we are using the Add() and AddRange() methods of the DataTableCollection of the DataSet to add a DataTable to a DataSet. Here are examples of three different techniques to add a DataTable to a DataSet.

1. Add a DataTable directly to a DataSet

2. Create a DataTable and Add it to a DataSet

3. Create multiple DataTable objects and add them to DataSet using the AddRange() method of the DataTableCollection of the DataSet.

The DataTableCollection contains all of the DataTable objects for a particular DataSet. You can access the DataTableCollection of a DataSet using the Tables property.

The key methods of the DataTableCollection are Add(), AddRange(), AddRange(), Clear(), Contains(), CopyTo(), IndexOf(), Remove(), RemoveAt()

Add() method has four overloads:

• Add()

• Add(DataTable dataTable)

• Add(string tableName)

• Add(string tableName, string namespace)

Output :