How to Convert DataTable To ArrayList

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Hi , can anyone teach me how to convert data table to arraylist or to loop data table contents, my datatable has only 1 column.
I dont have google sorry :)
Thanks

Posted 16-Jan-14 20:15pm

Goenitz

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thatraja 17-Jan-14 2:19am

Don't have Google? how about bing? or other search engines?

Goenitz 17-Jan-14 2:22am

nothing just code project and asp.net :)

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Gitanjali Singh · Answer 1 · 2014-01-16T20:30:00

Solution 1

C#

ArrayList rows = new ArrayList();

foreach (DataRow dataRow in myDataTable.Rows)
    rows.Add(string.Join(";", dataRow.ItemArray.Select(item => item.ToString())));

It is unwise to use the obsolete ArrayList .Use List<string> instead, since the rows are strings:
This may work.

Posted 16-Jan-14 20:30pm

Gitanjali Singh

Sandeep Singh Shekhawat · Answer 2 · 2014-01-16T20:34:00

C#

//create DataTable
           DataTable dt = new DataTable();
           dt.Columns.Add("Name", typeof(string));
           for (int i = 1; i < 10; i++)
           {
               DataRow dr = dt.NewRow();
               dr["Name"] = "Test" + i.ToString();
               dt.Rows.Add(dr);
           }

           ArrayList arrayList = new ArrayList();
           //create arraylsit from DataTable
           foreach (DataRow dr in dt.Rows)
           {
               arrayList.Add(dr["Name"]);
           }

           //read ArrayList items
           foreach (var item in arrayList)
           {
               Response.Write(item + "<br />");
           }

Thomas ktg · Answer 3 · 2014-01-16T20:35:00

Here is an example to convert DataTable into ArrayList.

C#

public ArrayList ConvertDataTableToArrayList()
{
   DataTable dtTable = GetDataTable();
   ArrayList myArrayList = new ArrayList();
   for (int i = 0; i <= dtTable.Rows.Count - 1; i++)
   {
     for (int j = 0; j <= dtTable.Columns.Count - 1; j++)
     {
          myArrayList.Add(dtTable.Rows[i][j].ToString());
     }
   }
   return myArrayList;
}

Hope it helps you.

JoCodes · Answer 4 · 2014-01-16T23:19:00

Solution 4

Try

C#

ArrayList list=new ArrayList();
foreach (DataRow dr in dt.Rows) // dt- DataTable
{
  list.Add(dr);
}

VB

Dim list As New ArrayList()
For Each dr As DataRow In dt.Rows
list.Add(dr)
Next

Posted 16-Jan-14 23:19pm

JoCodes

v2

How to Convert DataTable To ArrayList

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