Copy from table to another based on Row and column

Question

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Copying from one table to another
I have 2 datatable table1 and table2
I want match the Parameter names and copy the 5th and 2nd value from table2 to table1 into a new column(p90 and p10) for same parameter Name how to approach the problem ?

Input
table1

|Parameter Name| Lower limit     |Upper limit  |
   Diff_IC[1]  |  1.5            |    2.5      |
   Prog_IC[2]  |-10              |  10000000   |
   Nam_IC[3]   |-64              |64           |
   ADCI_N[1 ]  |-0.8             | -0.1        |

table2

   Diff_IC[1]  |   Prog_IC[2]     |       Nam_IC[3]      | ADCI_N[1 ] |
 -0.145712003      -0.146583006         -0.165715003      -0.126583006
-0.137499005      -0.137592003          -0.157493005      -0.117592003
-0.142690003      -0.143250003          -0.132693003      -0.153250003
-0.139434993      -0.140459001          -0.129434933      -0.150459001
-0.147183999      -0.148519993          -0.117183459      -0.138519993
-0.137183999      -0.134519993          -0.517183459      -0.338519993

Output:
table1

|Parameter Name| Lower limit| Upper limit      |P90 point       |P10 point           |
  Diff_IC[1]   |  1.5       |    2.5           |-0.147183999    |-0.137499005        |
  Prog_IC[2]   |-10         |  10000000        | -0.148519993   |  -0.137592003      |
  Nam_IC[3]    |-64         |64                | -0.117183459   |  -0.157493005      |
  ADCI_N[1 ]   |-0.8        | -0.1             |  -0.138519993  |   -0.117592003     |

[Edit] Added from comment :

C#

for (int i = 0; i < +table1.Rows.Count; i++) {
   string col = table1.Rows[i]["Par Name"].ToString() 
   if (table2.Columns.Contains(col)) {
      table1.Rows[i]["point90"] = table2.Rows[4]["col"].ToString(); //Error here col does not exits in current context
   }
}

[/Edit]

Posted 10-Mar-14 0:52am

FarhanShariff

Updated 10-Mar-14 23:14pm

v6

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Comments

FarhanShariff 10-Mar-14 11:02am

for (int i = 0; i < table1.Rows.Count; i++)
{
string col = table1.Rows[i]["Parameter Name"].ToString();

if(table2.Columns.Contains(col))
{
table1.Rows[i]["point90"] =table2.Rows[4]["col"].ToString();//Error here

}

}

Maciej Los 10-Mar-14 18:04pm

Based on what condition? Would you explain a bit more? Let's say we have Diff_IC[1] parameter. Why do you get -0.147183999 value in P90 point column. There are several values? Why this one?

FarhanShariff 11-Mar-14 4:23am

It is just an example I have around 2000 values. It is basically Percentile-90 point & Percentile 10 point

2 solutions

Solution 1

C#

for (int i = 0; i < +table1.Rows.Count; i++) {

There is an extra + in front of table1; not a big deal, though.

C#

string col = table1.Rows[i]["Par Name"].ToString()

Two problems here:
- a ; is missing at the end of the line
- should not the name of the parameter be ["Parameter Name"] instead of ["Par Name"] (according to the rest of your post)?

And, most important, as the line where you are pointing the error is synctatically correct :
which error? Would you mind sharing it with us?

Posted 10-Mar-14 12:31pm

phil.o

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FarhanShariff · Accepted Answer · 2014-03-10T22:13:00

Solution 2

foreach (DataRow dr1 in table1.Rows)
{
string para = dr1["Par Name"].ToString();
dr1["point90"] = table3.Rows[5][para];
dr1["point10"] = table3.Rows[2][para];
}

Posted 10-Mar-14 22:13pm

FarhanShariff