get int value from data grid c# wpf

Question

I want to get value from datagrid

I use this code

 if (Convert.ToString((datagrid_customer.SelectedCells[3].Column.GetCellContent(datagrid_customer.SelectedItem) as TextBlock).Text) == Convert.ToString((datagrid_customer.SelectedCells[1].Column.GetCellContent(datagrid_customer.Items[i]) as TextBlock).Text))
                { 
...
}

and it is work but show me string .

when i convert it to int i got error

Mah m = database.Mahs.FirstOrDefault(x => x.MahID == int.Parse((datagrid_customer.SelectedCells[0].Column.GetCellContent(datagrid_customer.Items[i]) as TextBlock).Text.Trim()));

error

System.NotSupportedException: 'LINQ to Entities does not recognize the method 'Int32 Parse(System.String)' method, and this method cannot be translated into a store expression.'

value is not string .

What sould i do?

score 1 · Accepted Answer · edited Mar 26 '19 at 08:10

1

Try splitting it to separate operations:

TextBlock tb = datagrid_customer.SelectedCells[0].Column.GetCellContent(datagrid_customer.Items[i]) as TextBlock;
// null check
if(tb == null) return;

int i;
bool success = int.TryParse(tb.Text.Trim(), out i);
if(success)
  Mah m = database.Mahs.FirstOrDefault(x => x.MahID == i);

edited Mar 26 '19 at 08:10

Clemens

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answered Mar 26 '19 at 07:52

Michał Turczyn

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show me error on **out , int i** and **tryparse** – emadshn Mar 26 '19 at 08:05
@emadshn Chceck edited answer – Michał Turczyn Mar 26 '19 at 08:06
again error on **tryparse and out i** – emadshn Mar 26 '19 at 08:09
its work. thanks bro. – emadshn Mar 26 '19 at 08:29

get int value from data grid c# wpf

1 Answers1