How to display a messages during saving data into database in windows forms

Question

hello frndz
In my windows application i have a save button, which takes 30-40 seconds to save data to sql server. so In the mean time i want to display a message "saving...please wait" and after saving this message should be disappear.
please help me guyz
thanks in advance
kumar

Brandon Lewis · Answer

In order to do this you will need to create some sort of thread or Asynchronous call in order to keep the form from locking up while the saving operation is in progress. Welcome to the wide and often times frustrating (at first =) ) world of asynchronous and multithreaded programming. What you could do is do something like this: //Include the threading namespace using System.Threading; public class MyDatabase { //Created constant strings to allow easy interchange //of saving and done text notifications. private const string savingText = Saving Please Wait; private const string doneSavingText = Done Saving!; private Label savingLabel; private Thread savingThread; private delegate void SaveUpdater; /// /// Creates a new custom database /// to save the information to. /// /// The label to use /// to update the save status with. public MyDatabase( Label savingLabel) { this .savingLabel = savingLabel; savingThread = new Thread (SaveData); } /// /// This method is called from outside of the /// class to start the save operation. /// public void Save() { savingLabel.Text = savingtext; savingThread.Start(); } /// /// This method will be run on a different thread /// to prevent the locking of the user interface /// while the application is saving the information. /// private void SaveData() { //Save all of your information here... //When it is done it will invoke //the CompleteSave() method on the //savingLabel's owner thread to prevent //a cross thread operation exception. if (savingLabel.InvokeRequired) savingLabel.Invoke( new SaveUpdator (CompleteSave)); else //If the label doesnt need an invoke. CompleteSave(); } /// /// This method is called either on the owning threads /// terms or if an invoke isnt required is /// called normally. /// private void CompleteSave() { savingLabel.Text = doneSavingText; } }