List<Object> rollerliste = (from row in roller.AsEnumerable() select (row["rolName"])).ToList();
List<Object> yetkiliste  = (from row in roller.AsEnumerable() select (row["Visible"])).ToList();
                    
for(int r = 0; r < rollerliste.Count(); r  )
{
    for (int y = 0; y < yetkiliste.Count(); y  )
    {
         if(rollerliste[r].ToString() == "frmMasalar" && yetkiliste[y].ToString() == "true" && r == y)
         {
             cu.frmMasalar = 1;
         }
         else
         {
             cu.frmMasalar = 0;
         }
    }
}

Actually if(rollerliste[r].ToString() == "frmMasalar" && yetkiliste[y].ToString() == "true" && r == y) it seems to be checking for correct data but not working.

I just want to make check rollerliste if column1 is true "button.Enable = true" or false

CodePudding user response：

Please note that, within your loops, you are overwriting cu.frmMasalar over and over again. That alone might be the reason you're not getting what you want.

I'm not sure I totally understand what you want to do. But, check whether this might be simpler:

cu.frmMasalar = 0;
foreach(var row in roller.AsEnumerable()) {
  if((string) row["rolName"] == "frmMasalar" && (bool) row["Visible]) {
    cu.frmMasalar = 1;
    break;
  }
}

There are also more condensed ways to do this, if the point is to find the one entry where rolName == "frmMasalar":

cu.frmMasalar = 0;
var matchingRow = roller.AsEnumerable()
                        .FirstOrDefault(r => (string) r["rolName"] == "frmMasalar" 
                                             && (bool) row["Visible"]);
if(matchingRow != null)
   cu.frmMasalar = 1;