Is it possible to achieve File notification in visual basic. file notification allows you to set up watches on one or more folders (optionally including the entire subfolder tree) so that any changes made to the folders result in a notification being sent back to you. i really apreciate if any one provide the code.
View 9 RepliesWhen you change some date or time settings in Regions and Languages from Control Panel, Windows will apply and refresh the Notification Area right now. Now i change some date setting from Registry and want Explorer refresh right now, using the API SHChangeNotify, like below
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I am developing an app that uses a sql backend database (hosted on a different machine).The app I am developing will be run on 10 different workstations simultaneously.Sometimes the app will change the database in such a way that the database needs to initiate a workflow process and I'm not sure of the best way to do this.Also, when database changes happen, how does one best notify the other app instances that the change has happened, so they know to refresh their data? I was thinking that triggers could help initiate the workflow but it might be nice to develop the actual workflow in .net code.Should I write another App to run as a service on the server and do the work and also to tell the client apps when things change?
View 1 RepliesAt this moment I write and use Visual Basic 2008, how do I change back my IDE for different language such as Visual C++ or Visual C#. Can I change it? It is advisible? Do I get back my IDE from previous VB 2008 setting?
View 9 RepliesHow do I make the backcolor of a combo box change to red after the user clicks the combo box and makes a selection?
View 2 RepliesHow could I can change de back color of multiple buttons (2700 aprox) depending on the results of my SQL Query i know how to doit one by one i just want to doit in another way
View 5 RepliesI need your help of a problem that is frustrating me I have a list view box and I want to change to full row select back colour I have already achieved this for list box but the settings are different this is what I am wanting to do for list view any help will be gratefully taken on board
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i have form1 in vs2008, i would like to have a button where users can click it and the colorpicker pops up, like in photoshop or MSword where you select the text then pick the color.
if this it to complicated than i can have 4 radiobuttons that each one is accosiated wiht a color, is theree a way to make the radiobutton diferent color than white( NOT THE BACKGROUND COLOR)the circle inside.
Is it possible to change the back color of a form to transparent? I don't want to use transparent key. Because I want to put a semitransparent picture in a picture box and there is a big problem with transparent key. The semitransparent pixels show the transparent key color.
View 8 RepliesI want to change the back color of a row in a data grid view while the program is running.
View 2 RepliesIf i have a DGV where i change the color of some of the cells like this...
DataGridView3(0, 1).Style.BackColor = Color.DimGray
DataGridView3(5, 3).Style.BackColor = Color.DimGray
DataGridView3(6, 0).Style.BackColor = Color.DimGray
is there a way i can change the entire DGV back color to something else (including those cells)i tried DataGridView3.DefaultCellStyle.BackColor = Color.Indigo but that does not seem to work on the cells already colored. Im guessing this is because im only changing the default cell color?
I have a DataGridView bound to a data table. I have one column where I permit updates. After I fill the table (at form load), I make an update to this column Then I attempt to update the change back to the bound table. I get the error 'Update requires a valid Updatecommand when passed dataRow collection with modified rows'. I have seen some examples on-line to define, load, and update but since I have the generated datagridview with bindings, shouldn't the update method me a simple 1-liner? [Code]
View 2 RepliesI have this problem every so often in VS2010. What will happen is I'll be working along and run the program then stop debugging. When I get back to text editor to change something the cursor will be stuck. It won't let me move it with the arrow keys and I can't type anything in. I can move it with the mouse but when I do that I still can't type anything in at the new position. The only way to get this to go away is to close out VS2010 and restart it again.
View 12 RepliesMy problem with my project so please help me about I am enclosing my project with problem very simple but I can't found. I am using text box and listbox last two textbox i.e. txtlani and maskedtextbox.
Now the problem is when the user put the data into above mentioned two text boxes for the selected item of the list box I want to change the back color and If the user wish to leave blank that two text boxes then no change at all in the list box selected item.
In short that if Textbox leave blank then no change in the selected item back color if in the Textbox have some value than selected item back color change.[code]....
I want to maintain a FLAG in Which there is two values of FLAG
1) yes and 2) no
i want that when a form is load a Flag value is yes and The form is close the flag value is no in my back end Database
It is same like sing in person on any web site.
But my Problem is that how can i maintain it any how the my computer is turn off .
i store a database on single computer that is server.but i also want a code for on same computer
How I can change the back color of a single cell of a datagridview in runtime?
View 1 RepliesI have been playing around with the "MouseDown" event and have gotten stuck. What I need is for when you click on a label (for instance), the back color will change, BUT I also want it to change to another color (back to its original) when nothing is clicking it. I can change the color with one mouse click, but when I release the mouse button, it stays the color it changed and doesn't revert back.
View 2 Repliesi tried to change back color of a label by command button by using a variable value
Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim colorof As String
colorof = "Color.Red"[code]....
but its giving error and is not working,
Label1.BackColor = Color.Red is working but I wanted to do this with variable value
I have implemented the filestream feature of SQL Server 2008 in a VB.Net application. I can insert files, and then retrieve/view them just fine. However, I have huge problems trying to update a file. Eg. The user selects a file from the grid which I execute via process.start. If that file is a .txt file, the user may choose to edit it. In case that happens, I need to save the changed file back to the database. So far I have failed to do that.
What I do, is take the retrieved file, copy it (cause i got some errors about it being used), and then Process.Start it. After that, via .NET filestream, I convert the file to bytes and try to update the record. SQL Profiler and a manual SELECT on the varbinary(max) column tell me that the file is updated properly, but the very next try to retrieve it I get an unchanged file.
After that I also tried to update the file by changing its File-System Version, but the file still wouldn't seem to update. Does Anyone have a code sample of how I can achieve this operation? Like 500 sites on the internet have examples of how to Insert And Retrieve the file, but not a single example on how to update. This is how my second attempt of trying to update the file via the filesystem looks like. The code for inserting/retrieving is very similar and it works properly. [Code]
# TAG NAME = is saved to a file using the code below but when I load that same file back into a RichTextbox Control using additional code below, I get inconsistent results as I try to parse the text. Has anyone else had this problem?'Save the contents of the RichTextBox into the file.richTextBox.SaveFile(saveFile1.FileName, RichTextBoxStreamType.RichText);'Retrieve contents of File into RichTextBox control Dim logData As String
logData = System.IO.File.ReadAllText(path + "\" + filenname);
How to change the Data Gridview Button Back Color and Fore Color Based on Condition in Vb.net2005. i'm Attaching the gif toooo
View 5 RepliesI am using an image button and on click of it i want to go to visited page.Now i am using - Response.Redirect(Request.UrlReferrer.ToString()),It is going to previous page, but when i am in a page of some user details where the link is looks like - users.aspx?userid=25 and i visit some other page and click back(image button) i want to see the same userdetail page. How to track that.
View 2 RepliesI have a search page with a couple of pulldowns. Dependig on the values of them I show a grid matching the searched criteria, basically a table with links the user can navigate to. My problem comes when the user wants to navigate back. At the moment I have a "Back" button which simply redirects the user to the initial search page. I think it would be a good improvement to have the values of the pulldowns filled in with the values the user selected, this way when he presses the "Back" button he would not have to restart the whole search process again.
View 5 RepliesMy VB2010 programme changes the background colour of a button (butExtra.BackColor = Color.Red). But how do I restore the colour to the default "Control" colour?
View 2 RepliesI'm not sure what I did, But I would like to get my toolbox back to normal where I can put it back on auto hide and such.
View 3 RepliesBasically what I'm now trying to find out is simply how to convert an Executable file into byte or byte array as i've heard it called, and then back again. I had a friend used to do it with a program in VB6 a few years ago where he would convert the EXE into byte and store it in a sql database and then his boss would be able to retrieve it later on when he was out on business overseas and it seemed to work very well.I'd like to know how to do it in VB.NET, however after going through some sites using google search I have come up short.
View 6 RepliesI have a datagridview (Unbound), wich calculate several numbers, and I use this following code to save 5 of the columns to a XML file. My problem is that I would like to load this file back to my datagridview, and only to the same columns, without changing the rest of the datagridview.
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We have a server application and a client application that communicates with each other using socket.
When the server application sends 2 messages about 16-31 ms apart, the 1st message is received by the client application with little delay (like 16-32 ms after it was sent). But the 2nd message is received by the client application a lot later (like 200 ms later) than when it was sent.
We already disabled Nagle algorithm (set NoDelay = True) in the socket in both the server and client application.
We are having problems with sending back to back emails on one of our web sites. The site is built with .net framework 2.0.We can send the first email without any problems on every try. But to send a second email you need to wait about 20-30 minutes.the problem.One thing we tried was changing the smtp email server. We tried a third party smtp server but the same problem persisted. So I think the problem is not with the smtp server but with our .net code.
Imports Microsoft.VisualBasic
Imports System.Net
Imports System.Net.Mail
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I have a text file which look like this:
M48
METRIC,LZ
VER,1
FMAT,2
DETECT,ON
%
G93X0Y29
T250
X22Y0
X0Y0
T169
X016038Y11991
X203998Y11991
X203998Y-134725
T168
X216888Y105277
X216Y-108
X003148Y105277
X004Y-108
T170
X11Y1535
T176
X119035Y-126978
X024039Y-119104
X024039Y-120374
X024801Y-117961
X048118Y-124438
Now I need to do is I need to read the file after the line DETECT, ON then if I find T250, T169, T176.....Txxx which ever line start with T. I must read and write that line back in between the line FMAT, 2 and DETECT,ON in my same text file.