to add values inside the datatable

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i have created an data table with four columns A,B,C,D i want to add the entire values inside those columns which are of datatype int

A B C D
1 0 0 0
0 1 0 0
0 0 0 1

to add those values inside the column for eg:sum=a[i]+b[i]+c[i]+d[i]

Posted 7-Aug-13 1:42am

Dhananjay Dashrath

Updated 7-Aug-13 1:51am

v2

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4 solutions

Solution 1

One way to access them would be the following, assuming you have a DataTable named dt

C#

dt.Rows[0][0].ToString(); // this will give you the first row first column

Posted 7-Aug-13 1:55am

ZurdoDev

Solution 3

DataTable dt = new DataTable("Data") ;
            DataColumn dc;
            
            dc = new DataColumn("A");
            dt.Columns.Add(dc);
            dc = new DataColumn("B");
            dt.Columns.Add(dc);
            dc = new DataColumn("C");
            dt.Columns.Add(dc);
            dc = new DataColumn("D");
            dt.Columns.Add(dc);

            DataRow dr;
            dr = dt.NewRow();
            dr["A"] = 1;
            dr["B"] = 0;
            dr["C"] = 0;
            dr["D"] = 0;
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr["A"] = 0;
            dr["B"] = 1;
            dr["C"] = 0;
            dr["D"] = 0;
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr["A"] = 0;
            dr["B"] = 0;
            dr["C"] = 0;
            dr["D"] = 1;
            dt.Rows.Add(dr);

Posted 7-Aug-13 2:15am

Kajal204

Solution 4

you have to iterate for all rows in your column. try this:-

DataRow row;

for (int i = 0; i <= length; i++) 
{
  row = workTable.NewRow();
  row[0] = "CustID" + i.ToString();
  Table_Name.Rows.Add(row);
}

Posted 7-Aug-13 2:21am

TrushnaK

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Mukesh Ghosh · Accepted Answer · 2013-08-07T02:09:00

Try like

C#

DataTable table = new DataTable();
       table.Columns.Add("A", typeof(string));
       table.Columns.Add("B", typeof(string));
       table.Columns.Add("C", typeof(string));
       table.Columns.Add("D", typeof(string));
        table.Rows.Add("0","0", "0","0");
       table.Rows.Add("0","1", "0","0");
        table.Rows.Add("0","0", "0","1");
        int sum = 0;
        foreach (DataRow dr in table.Rows)
        {

            foreach (DataColumn dk in table.Columns)
            {

                sum = +Convert.ToInt32(dr[dk]);
            }
        }