Introduction: When you try to connect to an instance of Microsoft SQL Server from a remote computer, you may receive an error message. This problem may occur when you use any program to connect to SQL Server. For example, you receive the following error message when you use the SQL Management Studio to connect to SQL...
The terms tier and layer are frequently used interchangeably, but actually there is a difference between them: Tiers indicate a physical separation of components, which may mean different assemblies such as DLL, EXE, etc... on the same server or multiple servers; but layers refers to a logical separation of components, such as having distinct namespaces...
What Captcha stand for? Completely Automated Public Turing test to tell Computers and Humans Apart. The Captcha technology help you to make sure your site is reasonably secure against automated attacks. Write the following code in a class named Captcha: public class Captcha { //make the captcha image for text public Bitmap MakeCaptchaImage(string txt, int width, int hight,...
Server.Transfer processes the page from one page directly to the next page without making a round-trip back to the client's browser. This way is faster, with a little less overhead on the server. However, it does not update the clients URL history list or current URL. Response.Redirect, as expected, is used to redirect the user's...
If you are using ajax by using UpdatePanel, and there is a control inside the UpdatePanel causes a postback that would normally run Javascript, and you find the Javascript is not running, add a postback trigger to the UpdatePanel using the ID of the control that causes the postback.
In order to make all dates before the current date, not able to be selected, in the onDayRender event for your Calendar: if (e.Day.Date < DateTime.Today) { e.Day.IsSelectable = false; } To make it more obvious to the end user, also add: e.Cell.BackColor = Drawing.Color.GhostWhite; e.Cell.ForeColor = Drawing.Color.Gainsboro;
After you finish your ASP.NET Application "Developing and Testing", and before you upload the application to a production server, don't forget to change the value of debug="true" to false in the compilation section in the Web.Config file. This would increase the performance of your web application.
When a page loads, in order to get the name of the page that sent you there, all you need to use is: Request.UrlReferrer.ToString(); You can create a global variable to hold it: string sReferrer = ""; Then, in the Page_Load event, assign it: if (!Page.IsPostback) { sReferrer = Request.UrlReferrer.ToString(); } Or, you can put it in ViewState at...
If you have an editable Gridview and you need to change the backcolor of the row you are editing, just write these tow lines of code in the Gridview's RowEditing Event. MyGridView.SelectedIndex = e.NewEditIndex; MyGridView.SelectedRow.BackColor = Drawing.Color.Red;
Lots of users click the delete button within the GridView with no attention then the result is that the item will be deleted from the GridView, so we can add confirmation message to appear to tell the user "Are you sure you want to delete this item?". First of all we have to attach the javascript code...
