Custom Places in FileDialog box
If you ever tried to Open a File from Visual Studio, you may notice something like Projects Folder in the Open File Dialog.
Open File Dialog in Visual Studio
We can also implement the same functionality in our applications by using CustomPlaces collection property of FileDialog class. The OpenFileDialog and SaveFileDialog classes allow you to add folders to the CustomPlaces collection.
openFileDialog.CustomPlaces.Add(@"C:\Users");
You can also specify GUID of Windows Vista known folder. Known Folder GUIDs are not case sensitive and are defined in the KnownFolders.h file in the Windows SDK. If the specified Known Folder is not present on the computer that is running the application, the Known Folder is not shown.
openFileDialog.CustomPlaces.Add(@"C:\Users");
//Desktop Folder
openFileDialog.CustomPlaces.Add(new Guid("B4BFCC3A-DB2C-424C-B029-7FE99A87C641"));
//Downloads Folder
openFileDialog.CustomPlaces.Add(new Guid("374DE290-123F-4565-9164-39C4925E467B"));
Open File Dialog with Custom Places
Note: This feature will not have any effect in Windows XP. Also you must set the AutoUpgradeEnabled to True(default) to enable this feature in Vista or Windows 7.
The following table lists few Windows Vista Known Folders and their associated Guid.
- Contacts : 56784854-C6CB-462B-8169-88E350ACB882
- ControlPanel : 82A74AEB-AEB4-465C-A014-D097EE346D63
- Desktop : B4BFCC3A-DB2C-424C-B029-7FE99A87C641
- Documents : FDD39AD0-238F-46AF-ADB4-6C85480369C7
- Downloads : 374DE290-123F-4565-9164-39C4925E467B
- Favorites : 1777F761-68AD-4D8A-87BD-30B759FA33DD
- Fonts : FD228CB7-AE11-4AE3-864C-16F3910AB8FE
- Music : 4BD8D571-6D19-48D3-BE97-422220080E43
DevCon 2010 by Kerala Microsoft User Group at Technopark Trivandrum
DevCon 2010
Kerala Microsoft User Group – K-MUG – coming with another mega event named DevCon 2010. Still we are finalizing the speakers and topics. But you will get some idea about the topics and sessions now. We have some contests as well for the developers, and try to get free Nokia touch phone if you submit the best entry.
For more details visit
http://k-mug.org/events/DevCon2010/
Why attend DevCon 2010?
Because you’ll return to the office with cutting-edge insights and expertise that will make life easier for you (and everyone else) at work. Immerse yourself in IT learning opportunities and get your questions answered by renowned technology experts. Even more importantly, engage and collaborate with Microsoft MVPs and thousands of your IT peers, building connections that will last beyond your two days at DevCon.
When
03 (Saturday) and 04 (Sunday) – July – 2010
Where
ParkCenter, Technopark, Trivandrum, Kerala, India
How to register
Watch this thread for more information : http://k-mug.org/forums/p/1499/4491.aspx. And you can register using this link :Register
ASP.Net Default button and Master Pages
Last few days I was(am) busy with one pure ASP.Net application(why its pure because we are not using any 3rd party controls, ajax nothing. Everything is postbacking 
). Today I got a weird bug from one of my QC team saying when ever they presses ENTER button, focus is on any textbox, it popups Help window from our application. In our application, end users can open the Help window, by clicking on some help images icons provided in the application. These images are displayed using ASP Image button controls (If you are using ASP Image controls this problem will not occur, but in our application, we need to disable it some scenarios, so can’t use ASP Image). After searching I found the issue with the default button property of ASP.Net, which helps us to submit the form using Enter Key. In my page ASP.Net considering the Help image button as default button for the Page. We can set the default button to our submit button using various methods. Set the default button property of the FORM, or create a Panel control over the controls and set the default button property of the Panel.
<form id="form1" runat="server" defaultbutton="cmdSubmit"> <asp:Panel runat="server" ID="plMain" DefaultButton="cmdSubmit">
Form tag also supports “defaultfocus” this property allows to focus to control, on Page Load.
<form id="form1" runat="server" defaultbutton="cmdSubmit" defaultfocus="txtUser">
If you are using Master Pages, there will be some slight difference because, the Form tag will not be available in the content Pages. It can fix using code behind, using FindControl method.
(Page.Master.FindControl("Form1") as HtmlForm).DefaultButton = this.cmdSubmit.UniqueID;
Also you can do something like this
Page.Master.Page.Form.DefaultButton = cmdSubmit.UniqueID;
Happy Coding 