How to convert DataTable to object type List in C#

Question

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I want to convert DataTable to object type List in C#. for the i have written the following code. But it is not working. Please help me

C#

public List<object> ShowMessage()
   {
       List<object> obj = new List<object>();

       DataTable dt = new DataTable();
       dt.Columns.Add("ID");
       dt.Columns.Add("Name");

       dt.Rows.Add("1","AAA");
       dt.Rows.Add("2", "BBB");
       dt.Rows.Add("3", "CCC");

       foreach (DataRow dr in dt.Rows)
       {

           obj.Add(dr);
       }

       return obj;
   }

NB:Just i want to convert a datatable to a list.You may not consider my above code.Just give me the code to convert a DataTable to a List. I am using .Net Framework 4.0

Thanks in advance
Rashed

Posted 10-Oct-12 21:07pm

Rasadul Alam Rashed

Updated 10-Oct-12 21:46pm

v2

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Comments

n.podbielski 11-Oct-12 3:11am

And how exactly it is not working? Can you paste some errors? What is desired behavior?

Sergey Alexandrovich Kryukov 11-Oct-12 3:11am

List<object> is in fact untyped list (as everything is object), normally, totally pointless.
In your sample, it should be List<DataRow>. (But why?!)
Just a note.
--SA

5 solutions

Solution 4

Can you try something like this:

C#

List<object> lst = dt.AsEnumerable().ToList<object>();

--Amit

Posted 10-Oct-12 21:31pm

_Amy

Updated 10-Oct-12 22:25pm

v2

Comments

[no name] 11-Oct-12 3:43am

Not working..

_Amy 11-Oct-12 4:32am

Check the link below:
http://s9.postimage.org/ts5ca0sq7/Untitled.png[^]
Here I used same code.

Member 11868427 28-Mar-19 12:39pm

Not working

Member 14566376 30-Aug-19 11:33am

No

Solution 2

hi
try this

XML

public static List<Object> ConvertRowsToList<Object>( DataTable input, Convert<DataRow, Object> conversion) {
    List<Object> Objval = new List<Object>()
    foreach(DataRow dr in input.Rows)
        Objval.Add( conversion(dr) );

    return Objval;
}

Posted 10-Oct-12 21:18pm

Naga KOTA

Solution 3

XML

public static IList<object> ConvertTo<object>(DataTable table)
    {
        if (table == null)
            return null;

        List<DataRow> rows = new List<DataRow>();

        foreach (DataRow row in table.Rows)
            rows.Add(row);

        return ConvertTo<object>(rows);
    }

Posted 10-Oct-12 21:21pm

vivektiwari97701

Comments

[no name] 11-Oct-12 4:05am

ConvertTo<object>(rows) is not working...

Member 12639919 26-Jul-16 7:18am

Aahaan

Solution 5

http://lozanotek.com/blog/archive/2007/05/09/Converting_Custom_Collections_To_and_From_DataTable.aspx[^]

Posted 10-Oct-12 22:19pm

vivektiwari97701

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Sergey Alexandrovich Kryukov · Accepted Answer · 2012-10-10T21:17:00

This is how you should correctly add a data row:
http://msdn.microsoft.com/en-us/library/system.data.datatable.rows.aspx[^].

Besides, your code looks totally pointless. And hard coded immediate constants like "ID", "Name" is evil. This style makes code unsupportable. However, I would understand if you are just experimenting.

—SA

How to convert DataTable to object type List in C#

5 solutions

Solution 4

Solution 1

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