create Visual webpart custom properties in SharePoint 2010

Steps Involved:( Visual webpart)

• Open Visual Studio 2010.
• Create an "Empty SharePoint Project".
• Right click on the solution and click on Add => New Item.
• Select "Visual Web Part" template from SharePoint 2010 installed templates.
• Entire solution looks like the following
  
  
   
• Replace CustomPropertiesVisualWP.cs file with the following code.
  using System;using System.ComponentModel;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using Microsoft.SharePoint;using Microsoft.SharePoint.WebControls;
  namespace CustomProperties.CustomPropertiesVisualWP
  {
      [ToolboxItemAttribute(false)]
      public class CustomPropertiesVisualWP :WebPart    {
          public static string _value;
          [System.Web.UI.WebControls.WebParts.WebBrowsable(true),
           System.Web.UI.WebControls.WebParts.WebDisplayName("Enter the Value"),
           System.Web.UI.WebControls.WebParts.WebDescription(""),
           System.Web.UI.WebControls.WebParts.Personalizable(
           System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared),
           System.ComponentModel.Category("anavijai Custom Properties"),|
           System.ComponentModel.DefaultValue("")]
          public string _Value
          {
              get { return _value; }
              set { _value =value; }
          }
          // Visual Studio might automatically update this path when you change the Visual Web Part project item.        private const string _ascxPath =@"~/_CONTROLTEMPLATES/CustomProperties/CustomPropertiesVisualWP/CustomPropertiesVisualWPUserControl.ascx";
          protected override void CreateChildControls()
          {
              Control control = Page.LoadControl(_ascxPath);
              Controls.Add(control);
          }
      }
  }
  
  
  
• In CustomPropertiesVisualWPUserControl.ascx I have added one label "lblResult" and button "btnClick".
• Replace CustomPropertiesVisualWPUserControl.ascx.cs with the following code.
  using System;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.ComponentModel;
  namespace CustomProperties.CustomPropertiesVisualWP
  {
      public partial class CustomPropertiesVisualWPUserControl : UserControl    {
          protected void Page_Load(object sender,EventArgs e)
          {
          }
          protected void btnClick_Click(object sender,EventArgs e)
          {
              lblResult.Text = CustomPropertiesVisualWP._value;
          }
      }
  }
   
• Build and deploy the solution.