Adding Values Dynamically in DataTable in c# win. form

Question

5.00/5 (1 vote)

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How to inserted dynamic column value's?

Example (in the case of fixed column number)

Dt.Columns.Add("Name");
Dt.Columns.Add(""Id"");

Dt.Rows.Add("Mike",1);

Example (in the case of dynamic column number)

//Column count are not fixed come according to records inserted in database

Dt.Rows.Add("Mike",1);//How to add the column's value in Rows.Add dynamically

I Tried

Dt.Rows.Add(new string[Dt.Columns.Count - 2],"Mike",1);

but wasn't successful. Can Somebody help me here.

Error on writing the above code

Unable to cast object of type 'System.string[]' to type 'System.IConvertible'.Couldn't store <System.string[]> in TN5 Column.  Expected type is string.

DataTable Looks like (All Fields starting from "TN" are dynamically added)
https://www.dropbox.com/s/h3bhk0i0czh0tj0/datatable.png[^]

Thanks in Advance

Posted 10-Mar-14 0:49am

agent_kruger

Updated 10-Mar-14 1:17am

v4

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Comments

george4986 10-Mar-14 7:01am

can u post the structure of datatable and required output

3 solutions

Solution 1

try

Dt.Rows.Add("Mike",new string[Dt.Columns.Count - 2]);

Posted 10-Mar-14 0:56am

nandakishoreroyal

Comments

agent_kruger 10-Mar-14 7:12am

sir, in the question i have mentioned the same solution which did not work.

Solution 2

You can do this way also.....

C#

foreach (DataRow dr in ds.Tables[0].Rows)
{

    dr["Name"] = "Mike";
    dr["Id"] = 1;

}

Posted 10-Mar-14 1:03am

DipsMak

Comments

agent_kruger 10-Mar-14 7:13am

sir, i am trying to add rows not update the existing one.

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george4986 · Accepted Answer · 2014-03-10T01:19:00

Solution 3

dont know ur data structure of table, which u didn't posted

try this

C#

  string colName = "name from database ";
 /////more than one columns take the count
DataTable dt1 = new DataTable();
/////more than one column case use below code inside a loop with count of columns
  dt1.Columns.Add(colName, typeof(string));
////////////add new row after adding columns
 DataRow dr1 = dt1.NewRow();
  dr1[colName] = "value";
 dt1.Rows.Add(dr1.ItemArray);

gud luck

Posted 10-Mar-14 1:19am

george4986

Updated 10-Mar-14 1:31am

v2

Comments

agent_kruger 10-Mar-14 7:38am

sir, actually i posted the image.

george4986 10-Mar-14 7:49am

does the above code working?

agent_kruger 10-Mar-14 7:57am

thank you sir, it just worked fine.

george4986 10-Mar-14 7:54am

sorry dropbox is blocked here ;-(

agent_kruger 10-Mar-14 7:57am

no problem sir it worked.

george4986 10-Mar-14 8:00am

happy to hear it works
gud luck ;-)

agent_kruger 10-Mar-14 8:09am

thank you sir for your time and help.

Member 13307149 21-Nov-17 5:17am

XXAZ

Member 13307149 21-Nov-17 5:16am

azZz

Member 14719027 17-Jan-20 5:04am

dr1[colName] = "value";

Without this "value" , i need to pass the values dynamically from one .cs to another, for email purpose

From this to,
body = body.Replace("{ip}", Convert.ToString(emailContent.Rows[0]["ip1"]));

this,
DataRow dr = dtemailcontent.NewRow();
dr["ip1"] = ***** ;