Question

I am making a search index. I got it working pretty good but I cannot incorporate ItemID (item numbers) in my search because i am having trouble converting the String in the TextBox.Text to a int in order for it to be a comparable type.

var q = (from t0 in db.Item
         join t1 in db.Categories on t0.CategoryID equals t1.CategoryID
         join t2 in db.Divisions on t0.DivisionID equals t2.DivisionID
         where t0.DivisionID == DDLInt &&
         //Contains
         (t0.ItemName.Contains(txtSearch.Text.Trim()) ||
         t0.Email.Contains(txtSearch.Text.Trim()) ||
         t0.Description.Contains(txtSearch.Text.Trim()) ||
         t0.Phone.Contains(txtSearch.Text.Trim()) ||
         t0.ItemID.Equals(txtSearch.Text.Trim())) 
               // ^ This is the line where  
               //   it breaks because it is not a comparable type
         group t0 by new
         {

I am not sure how to convert or parse it and still have the search work properly.

Answer 1

Either parse the string to an int:

t0.ItemID.Equals(Convert.ToInt32(txtSearch.Text.Trim()))) 

or convert the int to a string:

t0.ItemID.ToString().Equals(txtSearch.Text.Trim())) 

or take the conversion out of the query:

int searchID;
if !int.TryParse(txtSearch.Text.Trim(),out searchID)
    searchID = -1;  // set to an invalid ID

var q = (from t0 in db.Item
     <snip>
     t0.ItemID.Equals(searchID))