Dynamic Language Runtime C#

C# > System > Dynamic

Dynamic Language Runtime.

• DynamicObject

Dynamic Object Runtime C# Example

C# > Sytem.Dynamic > DynamicObject

DynamicObject specifies dynamic behavior at run time.






Example:

Create dynamic object in runtime.

Dynamically Add C# Properties at Runtime.

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Dynamic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace WindowsFormsApplication26

{

    public class MyDynamicObject : DynamicObject

    {

        Dictionary<string, object> dictionary = new Dictionary<string, object>();

        public object this[string propertyName]

        {

            get

            {

                return dictionary[propertyName];

            }

            set

            {

                dictionary[propertyName] = value;

            }

        }

        public override bool TryGetMember(

            GetMemberBinder binder, out object result)

        {

            return dictionary.TryGetValue(binder.Name, out result);

        }

        public override bool TrySetMember(

            SetMemberBinder binder, object value)

        {

            dictionary[binder.Name] = value;

            return true;

        }

      

        public override bool TrySetIndex(

            SetIndexBinder binder, object[] indexes, object value)

        {

            int index = (int)indexes[0];

            if (dictionary.ContainsKey("Property" + index))

                dictionary["Property" + index] = value;

            else

                dictionary.Add("Property" + index, value);

            return true;

        }

    }

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            dynamic obj = new MyDynamicObject();

            obj["column1"] = 1;

            obj.column2 = 2;

            var v1 = obj["column1"];

            var v2 = obj.column2;

        }

    }

}

Telerik RadTimePicker Get Selected Time

Telerik > RadTimePicker > Get Time

Get selected time from RadTimePicker c#.

DateTime dt = radTimePicker.SelectedDate.Value;
string time = dt.ToString("HH:mm:ss");

Call one constructor from another c#

C > Keywords > This > Call one constructor from another 

      public Constructor1()

      {

      }

      public Constructor2(string writer) : this()

      {

      }

Lambda Expressions in a Query C#

C# > Operators > Lambda > Query

We use  lambda expressions in method calls not directly in query syntax.

Simple Example

     int[] wages = { 1000, 1200, 1500, 1800, 2000, 2500 };
    int highWagesCount = wages.Where(n => n >= 2000).Count(); 

DataGridView Windows Forms Control

Windows Forms >  DataGridView Control

You can use a DataGridView control to display data with or without an underlying data source. 
DataGridView contains cells, rows, columns, and borders.
Without specifying a data source, you can create columns and rows that contain data and add them directly to the DataGridView using the Rows and Columns properties. 

• DataGridViewLinkCell
• RowFilter
• Numeric Column
• DataGridViewButtonColumn
• Scroll to selected index

HyperLink ASP.NET Example

ASP.NET > System.Web > Web Controls > HyperLink

Displays a link to another Web page.

Events

• onClick

Example

<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="~/WebForm1.aspx">HyperLink</asp:HyperLink>