Adding PrimaryKeY To a Column in DataTable

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C#

DataTable dtPurity = new DataTable();
dtPurity.Columns.Add("PurityID") ;
dtPurity.Columns.Add("PurityRate");

Please Anyone help me to add primarykey to Column PurityID

Posted 24-Aug-11 21:34pm

Mathews Davis

Updated 25-Aug-11 0:54am

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snehalgb · Answer 1 · 2011-08-24T21:44:00

Solution 1

Refer this
http://msdn.microsoft.com/en-us/library/system.data.datatable.primarykey.aspx[^]

Posted 24-Aug-11 21:44pm

snehalgb

Comments

walterhevedeich 25-Aug-11 3:55am

Nice link. 5+

Simon Bang Terkildsen · Answer 2 · 2011-08-24T21:46:00

Solution 2

Set DataTable.PrimaryKey

C#

DataTable dtPurity = new DataTable();
DataColumn column = dtPurity.Columns.Add("PurityID") ;
dtPurity.Columns.Add("PurityRate");
dtPurity.PrimaryKey = new[] {column};

Posted 24-Aug-11 21:46pm

Simon Bang Terkildsen

Comments

walterhevedeich 25-Aug-11 3:55am

Looks good. 5+

Shameel · Answer 3 · 2011-08-24T21:46:00

Solution 3

You can do this:

C#

DataColumn[] keys = new DataColumn[1];
keys[0] = dtPurity.Columns["PurityID"];
dtPurity.PrimaryKey = keys;

Posted 24-Aug-11 21:46pm

Shameel

Comments

walterhevedeich 25-Aug-11 3:56am

Correct. 5+