Web developer can modify the where clause in LINQ statement to filter the results and to include only those that match a specific condition. The next code shows how to find clients who have a last name that starts with a specific letter:
Dim matches = From client In clients _
Where client.LastName.StartsWith(“D”) _
Select client
Web developer …
Web developer can modify the where clause in LINQ statement to filter the results and to include only those that match a specific condition. The next code shows how to find clients who have a last name that starts with a specific letter:
var matches = from client in clients
where client.LastName.StartsWith(“P“)
select client;
Web developer can combine …
Web developer can use approach described in the article How to use LINQ expression to get a subset of data in VB.NET to define a new class that wraps just the information he/she wants to return. For example, if he/she wants to get both the first and last names but he/she wants to store them in separate strings, …
Web developer can use approach described in the article How to use LINQ expression to get a subset of data in C# to define a new class that wraps just the information he/she wants to return. For example, if he/she wants to get both the first and last names but he/she wants to store them in separate strings, …
How to use LINQ expression to get a subset of data in VB.NET
In the article How LINQ expression is composed LINQ select clause was described. Web developer can change it to get a subset of data. For example, he/she could pull out a list of first name strings like this:
Dim matches = From client In clients _
select client.FirstName
or a list of strings with both first, middle and …
In the article How LINQ expression is composed LINQ select clause was described. Web developer can change it to get a subset of data. For example, he/she could pull out a list of first name strings like this:
var matches = from client in clients
select client.FirstName;
or a list of strings with both first, middle and last …
LINQ expressions have a superficial similarity to SQL queries, but the order of the clauses is rearranged.
All LINQ expressions must have a from clause that indicates the data source and a select clause that
indicates the data Web developer wants to retrieve (or a group clause that defines a series of groups into which the data should be placed). …
LINQ expressions have a superficial similarity to SQL queries, but the order of the clauses is rearranged.
All LINQ expressions must have a from clause that indicates the data source and a select clause that
indicates the data Web developer wants to retrieve (or a group clause that defines a series of groups into which the data should be placed). …
Web developer uses in this case the simplest form of LINQ – LINQ to Objects. Let for example Web developer has some sort of data class, like the Clients class shown next:
Public Class Client
Private _ClientID As Integer
Private _FirstName As String
Private _LastName As String
Private _TitleOfCourtesy As String
Public Sub Client(ByVal CliID As Integer, ByVal FName As String, _
Web developer uses in this case the simplest form of LINQ – LINQ to Objects. Let for example Web developer has some sort of data class, like the Clients class shown next:
public class Client
{
public int ClientID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }