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I just want to delete if column qty contains value 0 then delete that row but i get error after delte six records it says object refrence not set to instance there are total 12 records it delts six record without error For i As Integer = 0 To dt.Rows.Count … |
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Hi Team, I was wondering if I am the only one who is not able to do it or what. Well, as the title suggests, I would like to OPen Excel in vb.net. I was able to find end number of articles online on this but none would help. It … |
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Hi guys, I just got into a little problem.I just deployed an application with backend db access.It works fine on major OSs being used like win7 and XP. But some functionality related to the database doesn't work properly when deployed on win8. I used a code to delete temp table … |
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I have vb.net application with MDF-Sql database. I retrieves data from Table in MDF-Sql into datagridview by TableAdaptermanager/binding navifator. Although it displays data but when I want to save by this code, its not working.This code is working in vb.net with OleDb application but not here. Is there any another … |
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I am having trouble getting a correct response when searching through each of my datarows. While stepping through during debugging, I am seeing the boolean response is getting triggered even if one row does not match my selected string. I just want to search all of the rows and if … |
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This is the scenario: I have one table (main_tbl) with columns RECID(primary key),JOBNAME(text),STATUS(text). Now, I created an application that will query to the database and get one jobname and update the status. How can I make sure that multiple users wont get the same jobname when they executed the query … |
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can anyone help me regarding this??..i have here the code to get the new last record after deleting the last record...but i encountered an error saying... "An unhandled exception of type 'System.IndexOutOfRangeException' occurred in System.Data.dll Additional information: locid, make sure data column names are correct, ,make sure the index is … |
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What I have is a listbox with items imported from the database. From the Data Sources (Shift+Alt+D) I've dragged a table in the form of Details, instead of DataGridView. What I'm trying to figure out, is how to make the information to be displayed in the Details when an item … |
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Hi I have a dataset created programatically and I want to use this dataset to bind it to Microsoft ReportViewer. I tried the Microsoft ReportViewer with DataSet created at design time and it works well. I have searched a lot and this is the best thing I can find but … |
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Sub filllist() strsql = "select * from tabletest" ListView1.Items.Clear() sqlcmd.CommandText = strsql sqlcmd.Connection = sqlconn sqldr = sqlcmd.ExecuteReader() [B] sqlda.SelectCommand = sqlcmd -- the error is pointing here and it say NullReferenceException was handled then Object reference not set to an instance of an object. How do i solve this? … |
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hie how can i restrict the user to enter only numbers in a textbox |
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Hi I have used the following code to populate a DataGrid based on the contents of a textbox. the users searches for a name which is populated into a combobox based on the name in the combobox several textboxes are populated with data based on the data in one of … |
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I have 2 subs in my class. I need to use the values in the variables in the first sub in my second sub. like this. [CODE] Public sub test1() Dim one as double = 12 Dim two as double = 10 end sub Public sub test2() Dim three as … |
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This one has me stumped. I feel like it is something really simple, but I can't figure it out. I have a combobox that is triggering the population of some checkboxes depending on the user mode. For some reason, when I put a MsgBox() at the beginning of the function, … |
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I am new to VB.net. I want to start with small project on VB.net. User will we working on client system. Please help me how to start. |
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Hi guys, i am facing problem when i need to create an excel file and insert some data inside. Can anyone help me? i am using vs 2005 and excel 2003. |
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Hello, I am working on my new project and I need to create a table for each user dynamically. In which the user will provide the Table name in the textbox and on pressing Create button a new table gets created in the same MS access database file with the … |
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How to run a command of MS DOS with code through visual basic 6.0 for ex. setting the path, zip and unzip files etc. and also the commands of Visual Foxpro Databasese through VB. |
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How insert , Edit and update data in datagrid? Im using visual basic 2008 express. please help me. thanks. |
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IS there a way of generating reports from VB6 ( not through Data Reports & Crystal Reports ) which directly sends to a local printer and printing should be done fast, No matter what ever may be the font. |
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Hi there, The program in hand must retrieve a bunch of data from an SQL Database (currently stored in a DataTable), fiddle around with the data, and then upload the changed data to the same SQL database. Everything works fine at the mo apart from the final bit, uploading to … |
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Hi, Is there a way to comment multiple line of code in vb.net at once? means not inserting ' in front of each line in case i want to comment 20 lines that will be tedious job? TIA Samir Ibrahim |
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I can insert into my table by the bindingnavigator and dragging textboxes straight from the DataSet entering them and saving. But I want to insert into the DataBase via code and in order to do this I have used the below code to connect. I use this code to test … |
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Hi Friends .. need a small help can anyone help me in showing how to call a stored procedure which returns a recordset .. yea i need to pass one parameter also for getting that required data .. thanks in advance.. Sameer |
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hey there, i am creating a program, and i have text fields such as Customer Name, address, postcode, telephone email etc. and i also have a button 'add record' what do i have to code in add record to actualy save the records.. will i have to make a file … |
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I have gotten soooo many mixed opinions lately, and I was wondering what you guys thought of the current style. Please be brutally honest. I'm not talking about "It's missing a link in a convenient place" or little functional things that can easily be changed/added/removed. I'm talking about the color … |
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Hi guys, Anybody can help me out with this. I have made a DLL with VB.net. Under project settings i have marked checked 2 things 1. Register for COM interop 2. Make assembly COM visible When i build project its done successfully. Now i take DLL file from project location … |
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Hey, thanks for taking a gander at this. I'm new to VB and VB.NET, and I'm not entirely sure what the difference between the two is, nor what I'm using. I feel like a complete squib, but that's basically it. I'm using MSVB 2008 Express edition, unto which I assumed … |
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Hi all, Got a real pain of a problem. Im using vb.net to write a dll for third party software (PreS) that has no COM interface but allows functionality to call DLL's. But it requires an entry point of UserInstruction. I have been doing some research and have found seen … |
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I want to learn VB or VB.net and want to use for my website (ASP.net) So which language should i learn first which help to create my website and which one is easy to Learn. Waiting for experts replies. Thanks |