Clear filters RadGrid Telerik

Telerik > RadGrid > Clear filter

foreach (var column in RadGrid1.MasterTableView.Columns)
{
         column.CurrentFilterFunction = GridKnownFunction.NoFilter;
         column.CurrentFilterValue = string.Empty;
}

RadGrid1.MasterTableView.FilterExpression = string.Empty;
RadGrid1.MasterTableView.Rebind();

Print directly RadGridView

Telerik > Windows Forms > RadGridView > Print directly 

radGridView1.Print();

Clear contents of a file c#

C# > Clear contents of a file

WriteAllText creates a new file, write the contents to the file, and then closes the file. If the target file already exists, it is overwritten.

Example

 System.IO.File.WriteAllText(filename, string.Empty);

Remove unused usings Visual Studio

Visual Studio > Remove Unused Usings

Right mouse click > Organize Usings

XDocument C# Example

C# > XML > System.Xml.Linq > XDocument

XDocument is an XML document.

Example

XDocument xDocument = new XDocument(

            new XElement("Hours",

                new XElement("Emp1", "0"),

                new XElement("Emp2", "25"),

                new XElement("Emp3", "40"),

                new XElement("Emp4", "30")

                )

            );

Create a new document by filtering data using Linq

XDocument doc = new XDocument(

           new XElement("Report",

                    from el in xDocument.Element("Hours").Elements()

                    where ((int)el) >=30

                    select el

                )

            );

Result contains two records:

default keyword c#

C# > Keywords > default

This keyword is used in two ways.

• default label in switch statement
• generics: the default value
• null for reference type
• 0 for value type

Autofac Modules C# Tutorial

C# > Patterns > Dependency Injection  > Autofac Modules


Create a project with the following structure:

Project.cs

namespace AutofacModules

{

    public class Project

    {

        public int Id { get; set; }

        public string Name { get; set; }

    }

}

Task.cs

namespace AutofacModules

{

    public class Task

    {

        public int Id { get; set; }

        public string Name { get; set; }

    }

}

IProjectRepository.cs

namespace AutofacModules

{

    public interface IProjectRepository

    {

        void Create(Project project);

    }

}

ITaskRepository.cs

namespace AutofacModules

{

    public interface ITaskRepository

    {

        void Create(Task task);

    }

}

ProjectModule.cs

Register a component to be created through reflection.

using Autofac;

namespace AutofacModules

{

    public class ProjectModule : Module

    {

        protected override void Load(ContainerBuilder builder)

        {

            builder.RegisterType<ProjectRepository>().As<IProjectRepository>();

            base.Load(builder);

        }

    }

}

TaskModule.cs

using Autofac;

namespace AutofacModules

{

    public class TaskModule : Module

    {

        protected override void Load(ContainerBuilder builder)

        {

            builder.RegisterType<TaskRepository>().As<ITaskRepository>();

            base.Load(builder);

        }

    }

}

RegistrationModule.cs

Add a module to the container.

using Autofac;

namespace AutofacModules

{

    public class RegistrationModule

    {

        public static IContainer BuildContainer()

        {

            var builder = new ContainerBuilder();

            builder.RegisterModule<ProjectModule>();

            builder.RegisterModule<TaskModule>();

            return builder.Build();

        }

    }

}

Example:

            Project project = new Project()

            {

                Id = 1,

                Name = "Project 1"

            };

            Task task = new Task()

            {

                Id = 1,

                Name = "Task 1"

            };

            var container = RegistrationModule.BuildContainer();

//Retrieve a service from the context.

            var projectRepository = container.Resolve<IProjectRepository>();

            var taskRepository = container.Resolve<ITaskRepository>();

            projectRepository.Create(project);

            taskRepository.Create(task);