Introduction

ADO.NET provides a powerful way to create objects like dataset and datatale dynamically through code. This code sample illustrates these capabilities of ADO.NET.

Namespace involved

We will need following namespace to work with the examples :

• System.Data

Steps involved

Following steps are involved in creating a dataset programmatically :

• Create a DataSet object
• Create a DataTable object
• Create DataColumn objects with required data types
• Add DataColumn objects to DataTable object
• Add DataTable object to DataSet
• Use the DataSet in your code

Sample Code

Dim ds As DataSet
Dim tbl As DataTable
Dim col1,col2 as DataColumn

ds = New DataSet()
tbl = New DataTable("mytable")
col1 = New DataColumn("mycolname1", Type.GetType("System.Int32"))
col2 = New DataColumn("mycolname2", Type.GetType("System.String"))

tbl.Columns.Add(col1)
tbl.Columns.Add(col2)

ds.Tables.Add(tbl)