Linq - Specified cast is not valid

Question

IEnumerable<DataRow> drIEOrderDetail = 
   from data in dsOrder.Tables["ORDDETL02"].AsEnumerable()
   where data.Field<int>("INOWNER") == int.Parse(txtInventoryOwner.Text.Trim()).ToString()
   && data.Field<string>("SKUCODE") == txtSKUCode.Text.Trim()
   &&  data.Field<string>("PACKID") == cmbPackageId.SelectedValue.ToString()
   &&  data.Field<string>("BATCH") == txtBatch.Text.ToString()                                                           
   select data;

I'm getting error in:

data.Field<int>("INOWNER") == int.Parse(txtInventoryOwner.Text.Trim()).ToString()

where INOWNER datatype is Integer. Integer and String both is not accepting.

Answer 1

You specified the type of INOWNER is int, but you tried to convert txtInventoryOwner.Text to text object. Try removing the ToString()

data.Field<int>("INOWNER") == int.Parse(txtInventoryOwner.Text.Trim());

Answer 2

删除您的 ToString()：

   where data.Field<int>("INOWNER") == int.Parse(txtInventoryOwner.Text.Trim())

Answer 3

You mention that data.Field("INOWNER") is of type int.

Would you expect the following to compile?

int myInt = data.Field<int>("INOWNER");
string myString = int.Parse(txtInventoryOwner.Text.Trim()).ToString();
bool b = myInt == myString;