find column name by index in datatable row

Question

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hi i require following thing to achieve

My problem is that i have data in datatable. now i want to chage value for one column only having name "xyz"

C#

if(ResultSet.Rows[i][j].column name = "abc")
{
// then do something
}

or is there any way to iterate on datarow like

C#

foreach(datacolumn col in row)
{
if(col == "")
{
//do something
}
}

Posted 8-Aug-12 21:55pm

Gufran_khan

Updated 8-Aug-12 22:04pm

v4

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5 solutions

Solution 1

DataColumn class has a public property called ColumnName. You can use that.

Posted 8-Aug-12 21:57pm

dan!sh

Comments

Gufran_khan 9-Aug-12 4:03am

yes but how? i want to find column in datarow not in table. so can not use table.column.columnname.

dan!sh 9-Aug-12 4:20am

The object "col" in your code has a property called ColumnName. Use that.

Solution 3

Try this one

C#

DataTable DT = new DataTable();
foreach (DataColumn column in DT.Columns)
{
    Console.Write("Item: ");
    Console.Write(column.ColumnName);
    Console.Write(" ");
    Console.WriteLine(row[column]);
}

Posted 8-Aug-12 22:29pm

Prabhakaran Soundarapandian

Solution 5

It's not so taugh. Write a linq query to store the column names in the array.
Try this:

C#

//Storing the column names in string array. (dt is your datatable object.)
string[] columnNames = dt.Columns.Cast<datacolumn>().Select(x => x.ColumnName).ToArray();

if(columnNames[0]=="MyCol1"){
    //do your work here.
}
else if(columnNames[1]=="MyCol12"){
    //do other work here.
}
</datacolumn>

--Amit

Posted 9-Aug-12 0:23am

_Amy

Solution 2

Hi,
Please try it...

C#

DataTable dt = new DataTable();
            foreach (DataColumn dc in dt.Rows.Columns)
            {
                if (dc.ColumnName == "MyColumn")
                {
                    // Do code
                }
            }

Regards
Sebastian

Posted 8-Aug-12 22:02pm

Sebastian T Xavier

Updated 17-Jan-13 22:19pm

v3

Comments

Gufran_khan 9-Aug-12 4:14am

not working throwing exception at "foreach (DataColumn dc in dt.Rows) " saying invalid cast.

Sebastian T Xavier 9-Aug-12 8:08am

This code will work without any issues

Sebastian T Xavier 9-Aug-12 8:09am

I din't know , who down voted this answer. Anyway I don't think he is doing a fair job.

PipuMon 10-Jan-13 23:36pm

DataColumn dc in dt.Rows ?????? dt.Rows =DataRowCollection. of course invalid cast ...... (facepalm)

Sebastian T Xavier 18-Jan-13 4:19am

corrected now

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Gufran_khan · Accepted Answer · 2012-08-08T22:45:00

Solution 4

C#

clone = ResultSet.Copy();
                clone.Columns.Remove("disbursementdate");
                clone.Columns.Add("disbursementdate");
                               for (int i = 0; i < ResultSet.Rows.Count; i++)
                {
                    clone.Rows[i]["disbursementdate"] = (Convert.ToDateTime(ResultSet.Rows[i]["disbursementdate"])).ToString("MM/dd/yyyy");
                }

Posted 8-Aug-12 22:45pm

Gufran_khan

Comments

Sebastian T Xavier 9-Aug-12 8:11am

Ha, very good!!! You asking a question(That's too not clear), then answers it and accepts yourself. This is not fair.

mendy aaron 26-Aug-19 14:37pm

Thank you. I never new you could do this!