Get Distinct Value From DataTable Using C#.Net and VB.Net

This article will show you how you can retrieve distinct value from a datatable using c#.net. in this I will show you to get the distinct values of the datatable column.

Some of my previous articles related to gridview are as follows: Page Count Display in GridView Footer In Asp.Net Using C#.Net, GridView Bind Using DataTable With Paging In Asp.Net Using C#.Net,  Single RadioButton Selection in GridView In Asp.Net Using C#.Net, Bind and Validate GridView TextBox Value by jQuery In Asp.Net Using C#, Bind and Validate GridView TextBox Value by RequiredFieldValidator In Asp.Net Using C#, Populate Data in GridView on DropdownList Selected Role in Asp.net Using C#.net, Search and Display Data In GridView From Database Table In Asp.Net Using C#.Net, Read XML File Data Using Linq Query and Add in DataTable to Bind GridView in Asp.net Using C#.Net, Bind & Search XML File Data and Display in GridView in Asp.net Using C#.Net, Search GridView Record on Button Click By Using C#.Net in Asp.Net.

Some listbox articles are as follows: Bind and Retrieve ListBox Selected Value in MVC Using C#.Net, Stylish RadioButton, DropdownList, ListBox and TextBox Control In Asp.Net Using Css, Move ListBox Items From one ListBox To another ListBox Using C#.Net In Asp.Net, How to add/move multiselected items from one listbox to another listbox in C#.Net and VB.Net | C# multiple selection listbox move Using C#.Net, Transfer Listbox Items to Another Listbox Using C#.Net and VB.Net | How to Move List Box Items to another List Box in C#

So for this article first we will create a new application and retrieve data from database in a datatable using c#.net and vb.net.

But first please check the table data.

C#.net

SqlConnection con = new SqlConnection(System.Configuration. ConfigurationManager.ConnectionStrings["con"].ToString());             try             {                 DataTable objdt = new DataTable();                 string query = "select * from UserDetail;";                 SqlDataAdapter da = new SqlDataAdapter(query, con);                 con.Open();                 da.Fill(objdt);                 con.Close();                 if (objdt.Rows.Count > 0)                 {                     DataView objdbview = new DataView(objdt);                     DataTable objdistinctitem = objdbview.ToTable(true, "UserType");                 }             }             catch             {                 con.Close();             }         }

Here in above code please check the highlighted code.  This is used for retrieving the distinct value.

DataView objdbview = new DataView(objdt);                     DataTable objdistinctitem = objdbview.ToTable(true, "UserType");

Now here is the output of the code.

Now we will retrieve distinct value on the bases of multiple column. Please check the modified code. First please check the sql table data.

Now check the code

DataView objdbview = new DataView(objdt); DataTable objdistinctitem = objdbview.ToTable(true, "UserType", "Name");

Now check the output.