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Showing posts with the label Validations

How to set max limt of File Upload in Asp.net

Many times I faced the same problem with all my applications, that is Max size of file to be uploaded to server. By default, the maximum size limit of a file to be uploaded to a server using the ASP.NET FileUpload control is 4MB. You cannot upload anything that is larger than this limit. If you wants to upload a file more the size of 4 MB which is by default, you have to make some changes in the application's web.config: <configuration> <system.web> <httpRuntime maxRequestLength="xxx" /> </system.web> </configuration> Below is the small description of the parameters attributes. maxRequestLength - Attribute limits the file upload size for ASP.NET application. This limit can be used to prevent denial of service attacks (DOS) caused by users posting large files to the server. The size specified is in kilobytes. As mentioned earlier, the default is "4096" (4 MB). Max value is "1048576" (1 GB) for .NET Framework ...

How to pass server values to Javascript using Eval()

In my application I have a target to show message if user does not have permission to navigate to another page. I can do this by using server code but it will make a round trip to server and make a bad user experience so, I decided to use java script. Following is the function of Java Script <script language="javascript" type="text/javascript"> function func_Message(obj) { if (parseFloat(obj)>0) { return true; } else { alert("Please assign a value before viewing the details"); return false; } } </script> And following is the code of Link Button from where I am passing value to Java Script Function <asp:LinkButton ID="lnk_Details" runat="server" Text="Details" CommandArgument='<%# Eval("festi_id") +"~" + Eval("user_id") %>' CommandName="ViewDet...

Disbale JIT in .net / Application level Exception handling in .net

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Download Code Example I was developing windows application for a well known company of World. This application was in C#.net 2005. As per requirement I have to show user defined message whenever an Exception occurs in the application. The answer is very simply write a simple Try{},Catch{} statement to handle exception. Suppose I have a code of 1000 line unwanted code and error handling creates extra thread while executing the application. I had search on the internet and found a solution to disable the JIT debugger. It works but still it is showing the application information related to functions etc. used in the code. Now, a major issue had risen from client, i.e. he don’t want to show JIT information to user he wants to show his own message whenever any Exception occurs. Offf…. Now that’s the task to which needs to done. I cannot use Try{},Catch{} as this decrease the application performance. Finally I came to the solution. I had wired an event with application to handle applicatio...

Client side validations in C# using javascript

Client-side validation uses the same error display mechanism as server-side checking. Validating input data on web pages is usually a function performed by the server. The web page allows the user to enter data, and when the Submit button is pressed, the browser wraps up the data into an HTTP request and sends it to the server. The server checks each data field to make sure it is valid, and if any problems are found, a new form along with error messages is sent back to the browser. Wouldn't it be much more useful if problems could be detected in the browser before a server request is made? This approach would provide two primary advantages. It would lighten the load on the server, and, more importantly, it would notify the user of a problem with a data field almost immediately after he or she entered the bad data. This supports the truism that errors are cheapest to fix the closer the detection is to the original creation of the error. For example, if there is a problem with a zip ...