Visual Basic .NET Forum

1) They must be declared static 2) They can be declared either static or instance members 3) they must be declares in the same assembly(but may be in different sources files) 4) Extension methods can be used to override existing instance methods 5) Extension methods with the same signature for the same class may be declared in multiple...

I have a form which will display general data about a branch. Once you select contacts - then the form will display specific into about that branch. I am trying to add a phone number display to the page, but am having a hard time. This is the code I am trying to modify. I want to add the phone number after the branch. I would like the...

Hey guys, I dont really remember much from college, just this one thing I really need help with Basically im designing a programme where someone can put their information in, save it, and then I can access their information by clicking on their name in a list box. For example, they type in their name and number, when i open another form, their...

hello, can anybody tell me that how can we add charts in VB.Net???? i m beginner for vb.net... so plz answer me as soon as possible...i need it urgently..

Hell sir, sir plz tell me How to change Progressbar background color and for color.

hi friends, i am working in VB.net... i have a requirement of using a dropdown list/combobox in data grid for allowing user to select from the list. how can i do that.I want to have a particular column with this option available that should be filled with data from the SQL database. For e.g : if following are the fields in grid view :...

Hello I am a vb.net programmer. I use Visual Studio 2005. Now I am facing a problem. I am developing a database application and I use dataset for data binding to SQL Server database. I added a table adapter to dataset and use that data table on the form as data grid view.Then I debug the project and I can't see any column and any data on...

Hi Forum, I have asked questions about this before but my program has came to cross roads where I require more flexibility in my security procedures. At the moment I generate a specific key based on certain details about the system, and I hash this data to file, which ensures it will only run on this system. However it has now got to the...

I run understanding code in my bridge program to call the double dummy solver dds.dll. <DllImport("dds.dll", CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function SolveBoard(ByVal deal As dealstruct, ByVal target As Integer, ByVal solutions As Integer, ByVal mode As Integer, ByRef tricks As futureTricks) As...

I know I'm overlooking something very simple but How can I check if the text within an XML tag is blank? The code below works fine as long as there are values within an XML node (For example the <CPU>Intel</CPU> node below) but it throws an Exception error when the node value is blank/null whatever as in the example node <Monitor> ...

Hello I want to compare two array and save the miss match caharector into 3rd array. how to do it give me the best answer.

I have a checkboxlist named cblLike and I need to know how I can get all the values of the checked item and send them to a text file. I currently have other controls on the form that are being sent to a text file, so all I need to know if how to get all the values of the checkboxlist that are checked and then how to send those in the array I...

For some reasons that I don't understand all my design changes won't show up when I hit F5 and run the application. I can put how many new fields and labels with som "hello" text that I wont but they are not displayed at runtime. But all database changes the report i connected to will be displayed. How can that be? What is wrong with my report...

hi What code should I write to meet this goal: when I would double clik on a line of my datgridview some data that exists in this line will be recorded in textbox

I open an Excel workbook from VB.Net and then want an event in the workbook (such as pressing a button) to activate code in VB.Net. How do I accomplish this type of callback?

hello, i want to read a set of files from a particular directory( for example: D:\Date has set of .xls files like D1.xls, D2.xls, D3.xls). if the the file is not there then it should throw error.i am not getting how to to do this VB.Net? can anyone please help me to solve this issue.

I had tried to use SQL statement to retrieve data record from SQL server, but when the database grow, the query speed getting slower. I just want to get most recent 5 records, any way to make it fast? Below is the SQL SELECT Top (5) EventNumber, IP, DateTime, DateTimeStamp, EsdMaxLog, EsdMaxLin, EsdMaxAbs, EsdCntAll, EsdCntLast, SvMax,...

I want to make a software in vb where i wanted to use access as backend.i m very new in this line.please give me a complete code for making marksheet preferebly.please help me out

3 years ago I developed a vb.net application that connect to sql express 2005 data base. The application worked fine. We replaced our computers, so we installed the application again. (The same exe file, the same sql server and so on). Now, only when loading few forms I receive the following message: “An error has occurred while...

I like to add a gradient brush to each row of my datagridview. I like to change the gradient colors for each row independently depending of some cell values in the row. I know how to add a solid background color to each, cell, row, column etc. but I do not know how to add a gradient brush to each row individualy. I need to fill the...

Hey, i got this window is in an mdi form and the form_load event is not fully executed, im on window 7 x64 VB 2008. Here is the code of the form load event Private Sub frmGestion_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load bd.connexion("TacoBD.mdb") ...

hai, I have done VB.net application by the functionalities of export the word documet. Its working fine in the developemnt machine. During the developemnt , i have added the MICROSOFT.OFFIVE.WORD.INTEROP is added. I need to install in the clinet machine. How to make a setup with this com refrence file. I need some hurry. Plz help...

hi, My application is VB.net 2008 with sql server 2008 , the application is working on the server . whereas in the client i got the error which i attached below Error " A Network - Related or instance - specific error occurred while establishing a connection to sql server. The server was not found or was not accessible . Verify that instance...

I would like to export data from textboxes to excel. i've added a reference excel 5.0 to my project and i have the following code. Dim excelApp As New Excel._ExcelApplication Dim excelBook As Excel.Workbook = excelApp.Workbooks.Add(System.Reflection.Missing.Value) Dim excelWorksheet As Excel.Worksheet = _ ...

Guy I could really use the help. This is driving me out of my mind. My Gridview returns the wrong rowindex after sorting or filtering. I am using a detailsview to edit the selected record however I found out I was editing the wrong record. I am using this statement to retrieve the selected record from the gridview DetailsView1.PageIndex =...