20,899 Topics
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| | Hello Everyone So I have 2 datagridviews that compare information between them and if it does match it colors the rows in green and after its done all the white spaces colors the rows in RED, so the main thing is that i dont know how to print only the … |
| | Hi all... I hope you have good time .... I have problem in the new program and I want to your help .. I want to back up the database type from Access, but my problem I could not generate code to determine the path of the database, I noticed … |
 | Here is a class to SQL use an access database: Class MyDB Public DBName As String Private con As New OleDbConnection(ConStr) Sub New(ByVal DBN) DBName = DBN End Sub Private Function ConStr() ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & DBName & ";" End Function Private Sub ConInit() If con.State <> ConnectionState.Open Then … |
| | How to get get complete column from database to combo box ?  |
| | How do I find the number of USB ports available, and what their references are. Example there are 6 USB ports on my motherboard what code would I use to find their reference like, port 1 is called 0 and port 2 is called 1. I want a user to … |
| | I have created a Combo box with the 3 items. And one more Combo Box with the 9 items. When one item of 1st combo box selected,the 2nd combo box should show only 3 items out of 9 items. how to do this? I tried but not getting it.  |
| | Hi, I am trying to create a custom listbox control by inheriting the default system.windows.controls.listbox class which would automatically select the item based on keyboard input. Currently the listbox provided in Visual Studio is capable of searching only on the first letter, but I am trying to create onw which … |
| | hi There please help me in these program because the character only moves 1 time but it must be like this input: abcd output: dabc then when i click forward again output cdab output: bcda output: abcd like this and also it must be in backward to when i click … |
| | Hi I have a program in java that outputs 1000 hello world without using iterators (for, do while etc).. I tried to translate my code into vb.net and here's my code: `Module Module1 Sub Main() printToThousand(1) End Sub Public Function printToThousand(ByVal i As Integer) Dim r As Boolean Console.WriteLine("Hello World") … |
| | I have got menu bar. In that there is Logout option also. When the user clicks on Logout then it should pop up the msg that "successful logout" and close the current page and redirect to login form. I wrote this code: Me.Close() MsgBox("Logout Successful") Form1.Show() Form1.TextBox1.Text = "" Form1.TextBox2.Text … |
| | My textboxes and labels are fine in design view, but when I switch over to Debug or Build, a couple of the textboxes are pushed together and the labels aren't in their original spots. Haven't seen this before and was wondering if anyone has any suggestions as to why and …  |
| | Is there a way to check the x and y coordinates of a label in debug view?  |
| | I am making a project for my final year, asp.net with vb.net ( Beginner ). i upload the file using the fileupload control of asp.net on the server. Now how will the client be able to download that file? Would appreciate help. |
| | I have added 2 Combobox on form. Combobox1 and Combobox2. I have connected databasetable to Combobox1. i.e. Showing items of Combobox1 from database table column A. i.e. displayed one column of databasetable in Combobox1. Same way I have connected same databasetable but different column B to Combobox2. So,What I am …  |
| | how to store all items of database to combo box. i.e. store complete column in combo box? |
 | hi all, this my question again.. i need to load data from database and it will show in combo box. if i want to load id_user from database i will get all id user fill the combo box item, so i can choose the user. how can i do this? … |
| | Hi, I'm kind of new to VB and I'm trying to make myself a little game to help me get into the swing of VB (I know some java). Basically what I'm trying to do is this, I have 20 statements in a Select Case (right now they're just labels … |
| | I have a form that has a tabcontrol (TabControl1) and within that tab control is another one (TabControl2). I have textboxes on the main form as well as in each of the tabcontrols. In my savebutton event I have the following code: If CheckIfDirtyAfterLock = "Just Unlocked" Then CheckIfDirty(Me.Controls) Else … |
| | Hey Have a real problem here, I am making a simple calculator and it's saying InvalidCastException was unhandled when I try to debug it, here's the code, please tell me whats wrong with it: (and yes I have renamed the textboxes to addequals etc... ______________________________________________________________________________________________________ Public Class Form1 Private Sub … |
| | Hi all. im writing function to find and replace the string. Im using 2 textbox's one for keyword which is to find and one to to replace. im having having two buttons btnfindnext and btnreplace. if i click on replace button it should select the text first and agin if … |
| | Hello Daniweb! I'm an amateur programmer who's learned quite a bit from online references, and usually searching eventually reveals the problem but I'm stuck! I've overcome many obstacles when creating a custom button on the Ajax Editor control, namespace issues, registring the controls properly etc. I resist the temptation to …  |
 | #What do u think is wrong in this code???# ##no textbox is being affected :(## For Each ctrl As Control In Panel1.Controls If ctrl Is GetType(TextBox) Then CType(ctrl, TextBox).Text = "" End If Next |
| | I have a database of asset information with asset age as one of the columns..now i wish to display all the assets which crossed 4 years in the current year ..any suggestions will be appreciated! |
| | There is combobox and few textboxes. With the help of insert sqlcommand I can store textboxes values in the database. But with the same insert sqlcommand I need to store one more combobox selected item too.. How to do this? |
| | The combo box will show the category. Suppose there are 2 categories A and B. When we click on A then the code given inside 4 buttons should work. I tried in this way ,I checked the condition of selecteditem based on that added all 4buttons sub code. But it … |
| | Dim cmd As OleDbCommand = Nothing Dim smd_search As String = "select * from Old_info where UG_PG='BSc'" Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=E:\Bavu's\project\vb files\dms\SPA_Database.accdb") Dim myDa As OleDbDataAdapter Dim mydataset As DataSet cmd = New OleDbCommand(smd_search, con) myDa = New OleDbDataAdapter(cmd) mydataset = New DataSet() Try If con.State … |
| | Whenever I run the form and complete the procedure then I need to go back to sql database and click on execute. I want to avoid everytime going back and executing each entry because if I don't execute everytime then the further other [b]form data [/b]will not be[b] retrieved[/b] properly … |
| | How can I copy a datagridview to a gridview.. I only ask b/c I need to use the rendercontrol and its not available using datagridview. And Gridview is not an option for me to use in a windows application.. BUT the class is.. very odd but anyway. All the colors … |
| | Hi All, Don't know if this is the right forum for this query, but couldn't find anything more suitable. I have written a new app in VB.net as a front end to a mySQL database held on a PC on the LAN running Windows XP. This worked fine for a … |
| | Dear All, I have two arrays (array1 and array2)with double type data. I want to sort array1 to ascending order, and array2 with corresponding to the array1 indexes. Is this possible? Example below, Array1(0) = 2.30 Array1(1) = 4.20 Array1(2) = 1.90 Array1(3) = 0.20 Array1(4) = 0.88 Array2(0) = … |
| | I am currently working on a stock market monitoring application and I was wondering if anyone cold help me by giving me a guideline on how to create a new portfolio(sort of a personal account) for each user that accesses the system such that 2 different users do not have …  |
| | I am currently stuck on a project where I am populating a datagrid from a series of labels and textboxes. I have that part down. Now for the part where I actually add it do the database, I am having a problem. It is actually adding everything to the database … |
| | I was wondering if anyone knew of a good tutorial for parsing data from a text file and then populating the data into multiple text boxes. I have a text file with information pertaining to my form. The text file consists of key identifiers for each piece of information needed … |
| | trying to trying to get extract content from a web page in to a listbox and contents are in this format 107.2.71.168:1708 107.3.217.65:1580 107.3.217.65:51723 107.43.148.15:8651 107.8.39.163:57071 107.8.63.188:11244 107.9.254.237:17209 108.222.146.33:44973 |
| | How to allow the user to select the date from the DateTimePicker and store that selected date ,month and year in the database table? What is to be written inside insert query of code? |
| | How to retrieve the particular column row to the text box? I mean how to display it in textbox? The column has got different rows. The code I wrote in vb net is : cmd = New SqlCommand("select ida from Issue where aname='" + TextBox3.Text + "'", con) In the …  |
| | hi! I've searched for backup and restore codes. I've also tried them out but they won't function as I want them to. I think the main problem is that, the database that I want to backup is contained inside the visual studio project under App_data. Can anyone please help me … |
| | Hey guys, I have a form that is used to navigate through records in a table one at a time. The form generates the number of textboxes required automatically. Navigating through the records is easy enough, but when I click the update button it comes up with the error: Object … |
| | The user will click the book name in the combo box. **Note: The combo box is separate from gridview i.e. it is not a part of gridview.** Then the gridview for Issuing books i.e. with the columns bid,bname,aname,data of issue,date of return shoudl be** displayed.** The row that will be … |
| | i've been all over the internet to solve this problem, but i've found no solution to my problem.my concept is this. Based on selected value within a combo box, the datagridview will populate with values from the database. For test = 0 To containerdetaildatatable.Rows.Count - 1 DataGridView1.Rows.Add() DataGridView1.Rows(test).Cells(0).Value = containerdetaildatatable.Rows(test).Item("Roundtrip") … |
| | I have a problem im my order form the user enter the order he chose the customer name and the product name and they should print in the list box the user should click on next product so he can enter another product for the custmer and when he finish … |
| | Hello my fellow DaniWebbers, I have a discussion topic for everyone. Winforms VS. WPF ITT: Your opinion on the two Your reason for coming to that discision Your approval/disapproval of Microsoft abandoning WinForms How this impacts your vb.net skills |
| | Hi, I have a MS Access 2003 (.mdb) database called "Assets.mdb" which I display in a datagrid. When I edit entries on the datagrid and click my save update/save button upon reloading of the application they have not been saved. What am I doing wrong? Private Sub btnSave_Click(ByVal sender As … |
| | I have created a project in which i am printing Hall ticket for an examination. i am using visual studie 2008 as front end and sql2008 as backend. I have created a report in crystal reprot. I have photographs of students in a local folder. how do i access or … |
| | the coding will works if the data type of my primary key is integer.but when i try to change the primary key in string data type i cant delete oe edit. below is my coding for that 2 button that is working. coding for edit button ` Private Sub Button4_Click(ByVal … |
| | Hello everyone. I'm trying to work with this kind of file: http://www.mediafire.com/?da0ad07pzfogdl0 (you may use Notepad++ to open it) I think it's a binary data file but I'm not sure. Anyways what I need to do it's to edit some of the text part inside it. Example: http://img403.imageshack.us/img403/8017/94022290.jpg I'd like … |
| | Hello Everyone,I'm new at DaniWeb I have a problem with my file download function. This's my function Private Function download_files(ByVal _URL As System.Uri, ByVal _SaveAs As String) If InternetConnection() = True Then Dim _WebClient As New System.Net.WebClient() Try AddHandler _WebClient.DownloadProgressChanged, AddressOf _DownloadProgressChanged lblStatus.Text = "Downloading File :" & _SaveAs _WebClient.DownloadFileAsync(_URL, … |
| | how to deduct qty from data base i have used this sentex to deduct...... cm1.CommandText = "update inventory set qty=qty- " & cust_gv.Rows(i).Cells(3).Value() & " where item_name='" & cust_gv.Rows(i).Cells(1).Value() & "'" this sentex is giveing error |
| | Dear Experts, I am able to develop a service and Start it into services window; but i am unable to show form from this service. Actually i have to develop a project (run as service) in which form will be display when end user close this form service will be … |
| | As the beginner I want to know Is it necessary to add MDI parent for Library management System? Can this be done without MDI Parent too? And also is it necessary to add the below code for mdi parent of every project? Private Sub ShowNewForm(ByVal sender As Object, ByVal e … |
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