To make the validators on a page visible by default you can call the page’s Validate() method when it is loading, as in: private void Page_Load(object sender, System.EventArgs e){ if (!IsPostBack) { Page.Validate(); }} Or if you want to make visible only one validator, use: private void Page_Load(object sender, System.EventArgs e){ if (!IsPostBack) { // Where reqEmail is […]
In .NET 2.0 Form.Flash and Form.StopFlash seemed to disappear…
They indeed disappear. As Erick Ellis from Microsoft explains: We removed the Flash API because it was too simplistic and failed to address the core scenario which is Messenger’s use of flash. You could stop and start it, but you couldn’t control duration, end state and several other aspects. We just had to pull the plug […]
How can I easily deploy an ASP.NET web application to a web server?
Of course, you can just upload all the files of the application to the server via FTP, but on larger projects you’ll want to filter out the files that you don’t need for the project to run on the server. You can easily do this from Visual Studio .NET via the Project menu, Copy Project window. You have […]
How can I format a number to x decimal places?
If you have the number 28 and you want to display it as 28.00 here’s how you can format it: int val = 28;string formatted = val.ToString(“N2”); Of course, if you want to format it to 5 decimal places just use ToString(“N5”) instead.
How do I retrieve the Major and Minor application (assembly) version and the Build and Revision number?
You can nicely retrieve the major and minor version of your application by using the Version class to retrieve and decode the version from the assembly. Version vrs = new Version(Application.ProductVersion);MessageBox.Show(“Major: ” + vrs.Major + “\r\nMinor: ” + vrs.Minor); Also, you can get the build and revision number using the rest of the properties: Version vrs = new Version(Application.ProductVersion);MessageBox.Show(“Build: […]
What’s the range of each value data type in C#?
These are the basic data types in C# and their range: Keyword Class Range bool System.Boolean true and false byte System.Byte 0 to 255 sbyte System.SByte -128 to 127 short System.Int16 -32768 to 32767 ushort System.Uint16 0 to 65535 int System.Int32 -2,147,483,648 to 2,147,483,647 uint System.UInt32 0 to 4,294,967,295 long System.Int64 -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 ulong […]
ASP.NET DropDownList of US states
Below there is a list of states inside United States, each being a ListItem inside an ASP.NET DropDownList:
How do I create multiple entry points and specify which one to use?
How do I create multiple entry points and specify which one to use?To create multiple entry points you simply add multiple classes, each with a static Main function: using System;namespace MultipleEntryPoints{ class Class1 { class Point1 { [STAThread] static void Main(string[] args) { Console.WriteLine(“This is point 1”); } } class Point2 { [STAThread] static void Main(string[] args) { Console.WriteLine(“This is point 2”); } } class Point3 { [STAThread] static void Main(string[] args) { Console.WriteLine(“This is […]
How to select a random value from an array
To select a random value from an array (in the example below, an array of strings) we first generate a random number between 0 and the length of the array (which is also the last value in the array). // Initialize the string arraystring[] strStrings = { “Random string”, “Another random value from the array”, “Randomly selected index” };// […]
How to reset the identity column of a SQL table
To reset the value of the identity column in a Microsoft SQL table run the below query: DBCC CHECKIDENT (TableName, RESEED, 0) You will need to change TableName to the name of the table you wish to reset. This query will reset the identity column to 0, meaning the next row will have the identity 1. You can […]