Fetching Single Record using two conditions in LINQ

Question

I have a table which I am updating a single record using LINQ, but my condition to fetch that record is 2. My condition is this:

   Test p = dt.Tests.Single(c => c.ID == getID);

But I want to add another condition:

Where Cust_ID == 1. Something like this:

  Test p = dt.Tests.Single(c => c.ID == getID && t=> t.Cust_ID == 1);

But I cannot get hold of this situation using LINQ. Any help pls?

Answer 1

You need to put the logical operator inside the lambda:

dt.Tests.Single(c => (c.ID == getID && c.Cust_ID == 1) )

The inner parentheses are not needed; I added them to clarify that it's all one lambda.

Answer 2

In the lambda expression you should use the same alias

Test p = dt.Tests.Single(c => c.ID == getID && c.Cust_ID == 1);

Answer 3

You're trying to use two separate lambda expressions for a single argument. I suspect you're looking for:

Test p = dt.Tests.Single(c => c.ID == getID && c.Cust_ID == 1);

If that's not the case, please give us more details about what you're trying to test in your conditions.

Answer 4

 Test p = dt.Tests.Single(c => c.ID == getID && с.Cust_ID == 1);

Answer 5

You're almost there, you just have the syntax wrong:

dt.Tests.Single(c => c.ID == getId && c.Cust_ID == 1);

You simply use the same symbol and combine the conditions.