Create A Blank Solution in Visual Studio 2013

When you are starting a new project, you might not want to use the templates that Microsoft provided for you. There are times when you want to start off the project with a clean slate.  You can create a blank solution in Visual Studio.  However, the option to create a blank solution is kind of hidden.

Follow the steps below to create a blank solution:

1. Open Visual Studio 2013, and then click on "File", then select "New", then  "Project"

4.  Your blank solution will be displayed in "Solution Explorer"

ASP.NET : WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive)

If you receive the WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery' error, put the following lines of code in the Appliction_Start method in the Global.asax.cs file

        protected void Application_Start(object sender, EventArgs e)
        {
            string jqueryVersion = "1.8.0";

            System.Web.UI.ScriptManager.ScriptResourceMapping.AddDefinition("jquery", 
                                                new System.Web.UI.ScriptResourceDefinition
            {
                Path = "~/Scripts/jquery-" + jqueryVersion + ".min.js",
                DebugPath = "~/Scripts/jquery-" + jqueryVersion + ".js",
                CdnPath = "http://ajax.aspnetcdn.com/ajax/jQuery/jquery" + jqueryVersion + ".min.js",
                CdnDebugPath = "http://ajax.aspnetcdn.com/ajax/jQuery/jquery" + jqueryVersion + ".js",
                CdnSupportsSecureConnection = true,
                LoadSuccessExpression = "Window.jquery"
                
            });
        }

The above lines of code registers the jQuery library with the ScripManager. This will get rid of the error, you can do the same this with jQueryUI library.

Get the Window Screen Width With Javascript

window.screen.width

Telerik: Why the $find Method is Not Working for RadGrid

The reason the $find method is not working for you is because the RadGrid loads on late binding. You need to get the RadGrid client object in the pageLoad() function like in the code below. After you get it you can set the global variables in the your Javascript so the other function will have access to the RadGrid object.

    <telerik:RadCodeBlock ID="RadCodeBlock2" runat="server">
        <script type="text/javascript">
            var radGrid = null;
            var masterTableView = null;
            var rgDataItems = null;



            function pageLoad() {
                radGrid = $find("<%= RadGrid1.ClientID %>");
                masterTableView = grid.get_masterTableView();
                rgDataItems = masterTable.get_dataItems();
             }
        </script>
    </telerik:RadCodeBlock>

ASP.NET: Simulate a Button Click in Code Behind

In this blog, I will go over how you can simulate a button click postback.  By using the RaisePostBackEvent()  method.  Many of you probably want to do this because you wanted to refresh your GridView by faking a postback.  As you will see the two methods presented on this blog does not perform an actual postback, even though it behaves like it does.


Mark Up

    <form id="form1" runat="server">
    <div>
    
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
    
    </div>
    </form>

Code Behind

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication2
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            this.RaiseEvent(this, new EventArgs());
            if (!Page.IsPostBack)
            {
                this.Button1_Click(this, new EventArgs());
            }
        }

        protected void RaiseEvent(object sender, EventArgs e)
        {
            this.RaisePostBackEvent(Button1, " ");
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Response.Write("You've clicked " + Button1.Text + " ");
            
            if (Page.IsPostBack)
            {
                Response.Write("this is a post back");
            }
            else if (!Page.IsPostBack)
            {
                Response.Write("this is not a post back");
                Response.Write("<br/>");
            }
        }
    }
}

After you run the code you will find out that both ways of doing this does not cause a post back event.

JQuery: Infinite Loop Button Click

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" EnableEventValidation="false" Inherits="WebApplication2._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script src="Scripts/jquery-1.7.1.min.js"></script>
</head>
    <script type="text/javascript">
        
        $(document).ready(function () {
            $("#Button1").click();

        });
    </script>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
    
    </div>
    </form>
</body>
</html>

SQL Server : Database Reference For ADO.NET

Microsoft has some great references on ADO.NET, however finding everything you need quickly is another story.  This a quick reference of when you need to find information quickly when working with ADO.NET.

ADO.NET Data Mappings:

Oracle Data Type Mappings: http://msdn.microsoft.com/en-us/library/cc716726.aspx

SQL Server Data Type Mappings : http://msdn.microsoft.com/en-us/library/cc716729.aspx

OLE DB Data Type Mappings : https://msdn.microsoft.com/en-us/library/cc668759(v=vs.110).aspx

ODBC Data Type Mappings: https://msdn.microsoft.com/en-us/library/cc668763(v=vs.110).aspx


LINQ References:

LINQ To SQL : https://msdn.microsoft.com/en-us/library/bb386934%28v=vs.110%29.aspx

LINQ To Entity: https://msdn.microsoft.com/en-us/library/vstudio/bb386964(v=vs.100).aspx

LINQ To XML: https://msdn.microsoft.com/en-us/library/system.xml.linq.aspx

LINQ To Objects: https://msdn.microsoft.com/en-us/library/bb397919.aspx

C# Querying From An Oracle Database

In this blog we will go over how to query an Oracle database in ASP.NET using the System.Data.OracleClient data provider in C#.

Namespaces:

using System.Web.Configuration;
using System.Data.OracleClient;
using System.Data;

            string cs = WebConfigurationManager.ConnectionStrings["SomeConnectionString"].ConnectionString;

            using (OracleConnection oc = new OracleConnection(cs))
            {
                oc.Open();
                DataTable dt = new DataTable(); 
                OracleCommand ocmd = new OracleCommand("SELECT * FROM SOMETABLE", oc);
                OracleDataAdapter oda = new OracleDataAdapter(ocmd);

                oda.Fill(dt);

                GridView1.DataSource = dt;
                GridView1.DataBind();

            }

Previous: Oracle Date Format And Compare

Oracle Date Format And Compare

Oracle dates have a different format than SQL Server dates. So to select a date for the Oracle database you have to have the date in the following format.

string myDate = "10/9/2012 2:55:25 PM";

  string sql = "SELET * FROM SomeTable WHERE SomeDateField=" +
       "to_date('" + myDate + "','" + "MM/DD/YYYY HH:MI:SS " + 
       myDate.Substring(myDate.Length - 2) + "');";

Next: C# Querying From An Oracle Database

Telerik: The Current RadAjaxManager

RadAjaxManager ram = RadAjaxManager.GetCurrent(this.Page);