This tutorial will show you how to work with TreeView control to display folders and file names without refreshing web page by C# and ASP.NET. First, you need to import the namespace from System.IO.DirectoryInfo in the namespace System.IO.DirectoryInfo class for typical operations such as copying, moving, renaming, creating, and deleting directories. using … more

To solve this problem we can increase the timeout. You can change the timeout time by adding a new property to the script manager control. This property is called AsyncPostBackTimeOut and it can help us to define the number of seconds before the request will throw a request timeout exception*. For example if …

List of all objects : I usually run following script to check if any stored procedure was deployed on live server without proper authorization in last 7 days. If SQL Server suddenly start behaving in un-expectable behavior and if stored procedure were changed recently, following script can be used to check …

Primary Key: Primary Key enforces uniqueness of the column on which they are defined. Primary Key creates a clustered index on the column. Primary Key does not allow Nulls. Create table with Primary Key: CREATE TABLE Authors ( AuthorID INT NOT NULL PRIMARY KEY, Name VARCHAR(100) NOT NULL ) GO Alter table with Primary Key: ALTER TABLE Authors ADD CONSTRAINT …

Introduction Input validation is very common and important in any kind of application. In case of web application server side validation is a must and client side validation is highly anticipated. As you know ASP.NET provides you some handfull validation controls like RequiredFiledValidator, RegularExpressionValidator etc. Most of the time we have …

Encryption is the key for data security. Sensitive data such as Social Security numbers, credit card numbers, passwords, etc. should be protected from hacking. In SQL Server 2000, you have to create your own user-defined functions to encrypt the data or use external DLLs to encrypt the data. In SQL Server …

Part I of this series illustrated how to use simple case functions in queries. In Part II of the series, I am going to discuss how to use case functions in different types of scenarios. Method 4: Usage of searched case function Let us assume that we have the following table. use tempdb go if …

In SQL Server, the CASE functions evaluate a list of conditions and then return one or many results. In this article, I am going to illustrate the various uses of CASE functions in SQL server, in different places. Method 1: Usage of simple case function This is the common use of a …

CASE expressions can be used in SQL anywhere an expression can be used. Example of where CASE expressions can be used include in the SELECT list, WHERE clauses, HAVING clauses, IN lists, DELETE and UPDATE statements, and inside of built-in functions. Two basic formulations for CASE expression 1) Simple CASE expressions …

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Cobehind file .cs protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e) { int IntSelect; IntSelect = Convert.ToInt32(CheckBoxList1.SelectedItem.Value); for (int i = 0; …