Answer / kamalakannan.a

If we use c#

DataTable dt=new DataTable();

DataColumn Dc1 = new DataColumn("No", Type.GetType
("System.Int32"));

dt.Columns.Add(Dc1);

//Set Primary key
DataColumn[] dc = new DataColumn[1];
dc[0] = dt.Columns["No"];
dt.PrimaryKey = dc;

Kamal..

Answer / gopi

ds.Tables[0].Constraints.Add("pk_sid",
ds.Tables[0].Columns[0], true);

Answer / shahil singh

dim col() as new dt.datacolumn
col(0)=dt.column(1)
dt.primarykey=col

Answer / r.prajapati

In eidt dataset designer right click on column name which u
want as primary key and set it as pk

Answer / tamilan

This is answer is great. its help me lot.


In eidt dataset designer right click on column name which u
want as primary key and set it as pk

Answer / rajesh bhawsar

dt.PrimaryKey = {dt.Columns(0)}

What is the default provider in ado.net?

0 Answers  

Which object is used to add relationship between two Datatables?

0 Answers  

Differences between dataset.clone and dataset.copy?

2 Answers   Ksb, TCS,

What is difference between entity framework and ado.net?

0 Answers  

Which property is used to check whether a DataReader is closed or opened?

0 Answers  

How to call the SQL commands asynchronously in ADO.NET version 2.0

4 Answers   DELL,

What is data view and variable view?

0 Answers  

What is ado.net objects?

0 Answers  

What is ole2 format?

0 Answers  

How to aggregating data across related tables?

0 Answers  

What is the Magic Tables in Sqlserver2000?

7 Answers   IBM, SQL Star,

what are types of Dataset ?

6 Answers   HCL,