20,284 Topics
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| | i want to check whether the dates in a file are consecutive. that is if the dates are 7.10,2011 ,7.11.2011,7.12.2011 it should return true and if they are 7.10.2011,7.12.2011 it should return false.  |
| | Hello everyone! I would like to ask if... Is it possible to convert a project saved in Vb.Net 2010 to VB.Net 2008? Thank you for you response! I'm a student currently doing my Thesis Study. :) Chellemits |
| | I am developing a site in ASP.Net and VB.Net that will enable users to sort data in a GridView in Ascending or Descending order. The records are coming from an SQL Server Express database. I go to click on a column heading to sort the data and I get the … |
| | I'm trying to find a way to check for changes in a DataGridView. The gridview does not have a binding source because I am populating it based on some other information. Right now I get a NullReferenceException. It happens as the gridview is populated. I have marked the line where … |
| | Hello! Does anyone know how to set a progress bar? I am developing an audio and video converter manager. I wanted the progress bar to run 'til the process of the converting of file is finished. The converting time depends on the file size so I can't just set the … |
| | Hi Is there any Bootstrap Manifest Generator available for Visual Studio 2010? If yes, then please provide the relevant links and details. Thanks in advance. [B]synaqvi[/B] |
| | Good day to everyone:) , i'm a new user here and i'm also new to Visual Basic , i'm having problems coding the codes myself. It's an assignment for me from school , after attemtping it for a few hours , I'm almost finish but i'm having trouble in the … |
| | I am reading a text file line by line using StreamReader.Readline(). After reading a line i have to check whether some fields of the line which is read are present in the rest of the file or not. What i am doing is that after reading a line from the … |
| | Can anyone help me with this syntax.. i made 3 forms. and i want form 1 & 2 inputs displayed in form 3.. this is what i made so far.. don't know what to do next Form 1 [CODE]Public Class Form1 Inherits System.Windows.Forms.Form Dim ID, sname, course1, year1 As String … |
 | Hi, i am writing a mobile application to save some task. In this application i want save the data of task to the text file(*.txt). however, i faced some of the issues that i unable to save data to txt file due to the runtime error on file not exist …  |
| | [B]ERROR RECEIVED:[/B] [B][COLOR="Red"]NullReferenceException was unhandled [/COLOR][/B] Object reference not set to an instance of an object. And it points on the particular line: [B][I]dsNewRow = ds.Tables("Employees").NewRow()[/I][/B] [CODE]Imports System.Data.OleDb Public Class Register Public cn As New OleDbConnection Public rd As OleDbDataReader Public da As New OleDbDataAdapter Public ds As New DataSet … |
| | Hi I want to populate a text box from a stored table I have this for the data With DropDownList1 .DataSource = ds.Tables("property") .DisplayMember = "propRef" .ValueMember = "propRef" .SelectedIndex = 0 End With "property" holds all the info from the db when the user changes the dropdown list I … |
| | How can I sort label names on buttons within a form. Automatically sort the names and put into the correct place within the form. A-Z order sort can be left to right. Want some sensibility to the form not all mixed up. |
 | Hi, Please could you help me resolve the error message below by pointing me in the appropriate direction. The frustrating thing is that whilst the error code points to a Stack-Overflow I can not pin the offending code down because the software works faultlessly on some computers after deployment but … |
| | Hi, I am having problems when generating a chart dynamically. The problem is that sometimes the chart is rendered with a black background and sometimes without. I have stepped through the code and verifies each number and there are no anomalies or numbers that might cause a problem. The y … |
| | How to use Treeview using WPF in vb.net Treeview has to load data from database. Plz help me I was strucked from so many days  |
| | Hi guys, I'm finding myself in a little trouble. I've tried to google this problem, but without much success. Hopefully its something simple I'm missing and someone will be able to help me. I'm writing a little program that will synchronize two access database schema's. It works, to a point. … |
| | Hello, I am trying to program my page so that when a user clicks on a column heading of a gridview, the data is sorted either in ascending or descending order. So far, I have done it so that the gridview can be sorted: [CODE] <asp:GridView ID="GridView1" runat="server" Height="143px" AllowSorting="true" … |
 | Good day. I would just like to ask. if there is any way to uninstall program or uninstall program from add/remove using vb.net codes? Thank you very much. |
| | I don't know how to insert image into column header of listview |
| | I have 3 microsoft access databases all with exactly the same structure called Nimdas,Nimdas1 and Nimdas2. I can work on Nimdas in a program that I have written in VB2008. Now I want to flit from one to the other 'on the fly' using the same program. How do I … |
| | I am trying to populate an ArrayList using the elements from a DataTable. I know I could do this using Loop, but I am trying to figure out how to using AddRange. Here's my code: [CODE]SomeArrayList.AddRange(SomeDataTable.Rows.Item(0).ItemArray)[/CODE] The problem is that I can pass the collection except for the Zeroth element. …  |
| | I am rather new here and have already a good (I hope so) question. I work with an access mdb When I run the program with the following code it gives an error “Nullreference exception unhandled” “the object… is not for an example of an object…” (very free translated but … |
| | Hello everyone! I have a code below to get a specific file from my computer into the vb.net application I am developing. Is there anyone who knows how to change the path? What if I will try to put the application on a different computer? Or rather getting a music … |
| | Hey guyz Is this possible to get text automatically in textbox1 whenever any textbox is copied to the clipboard. I am talking to get it automaticaly. So if i copies abc then textbox1 value will be abc automatically (Not by clicking any button or form loading) |
| | How can I get all the data in dropdownlist? For specific data, I encode: Dropdownlist.selecteditem.text. But how can I get all the data? Thanks in advance. |
| | How do I search for a document from within my visual studio program. ie: looking for checklists by name or part of name and then be able to open the found document / file from the found search. comp - could return compactor / compressor etc.. then be able to … |
| | hi!, i have MDI form(Form1) which contain some toolstripmenu item. for example menu_101. if i do "Form1.menu_101.enabled=True" its working fine. my problem is i have a string variable like "menuname" which contain like menuname=menu_101 i need to enable or disable using this string variable like "Form1.menuname.enabled=True" please anyone knows let … |
| | How can visible a button only when a check box of a Data Grid View is checked???? |
| | Now i have some images and i have a database (MS Access) i need to convert all images to !one byte array!(couse i have 1 column for images) and i save this array. Then when i need a picture i should take some pic on this byte array. umm i … |
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