moreLinq DistinctBy – Remove Duplicate Record From DataTable Based On Specific ColumnName

 Overview: Here in this article I am going to show you how to remove duplicate records from datatable depending upon specific Column-Name. I recommend you to check my previous article (CLICK) where have written how to remove the duplicate record from DataTable without use `For loop`, `Dataview`, `Array List` and delete duplicated over looping etc and delete.

First, of all you need to download MoreLinq Library and import in your project. After Implement `morelinq` you can use a function called `DistinctBy` in which you can specify the property on which you want to find Distinct objects.

Duplicate free Datatable using more-linq ( morelinq )

protected void Page_Load(object sender, EventArgs e)
    {   
      // Distinctby  column name ID 
        var valueDistinctByIdColumn = getDT().AsEnumerable().DistinctBy(row => new { Id = row["Id"] });
        DataTable dtDistinctByIdColumn = valueDistinctByIdColumn.CopyToDataTable();
   }

 

public DataTable getDT()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("Id", typeof(string));
        dt.Columns.Add("Name", typeof(string));
        dt.Rows.Add("1", "sunny");
        dt.Rows.Add("2", "vicky");
        dt.Rows.Add("3", "prince");
        dt.Rows.Add("2", "john");
        dt.Rows.Add("5", "sunny");
        dt.Rows.Add("1", "sunny");
        return dt;
    }

OutPut :

DistinctBy Column ID: Here  you can see in output there is only four record which actually we want. i.e. distinct value by ID column

Display all records 

If you want to do distinct by 2nd column ie(Name)

var valueDistinctByNameColumn = getDT().AsEnumerable().DistinctBy(row => new { Name = row["Name"] });

DataTable dtDistinctByNameColumn = valueDistinctByNameColumn.CopyToDataTable();

Hope you enjoyed this tutorial. If you have any recommendations, please let us know what you think in the comment section below! See you again next time!