VS 2008 Add Database Columns To A ComboBox
May 11, 2009I have this code here:
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I know there is MyDataTable.columns How can I get it to put the columns into a ComboBox so i can select them?
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VS 2008 : Multiple Columns In ComboBox?
Apr 2, 2010i just finally got my code, with the help of you guys, working to fetch column values from my database and display it in a ComboBox.
Now i am thinking to myself that simply displaying a customer's surname just is not enough due to repetitive issues etc. What i propose that i should do is have multiple column values in a the combo box. For example
CustomerID, Surname, Firstname
My current code is:
con = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:My DropboxDocumentsTaxi Service ProjectDatabaseTaxiProjectDatabase.accdb;")
con.Open()
[code]....
VS 2008 DataGridView ComboBox Columns?
Nov 9, 2010So i have a datagridview with two combos, when the form it's created i fill the first one with all the MainValues, and the second one with all possible values for the MainValues (called SecondValues) (1..N).Now my issue, when the user selects one value from the first combo i want to fill the second combo with all values related to the selected MainValue, i can do this for example by filling the datatable again with a parameter that filters the data, but if the previous rows have different main values, the dgv throws errors because it doesn't find the binded ones in the new filtered datatable.
How can i handle this? One datatable for each line?! Other thing, i'm using the SelectionChangeCommited event for handling the values change (in theEditingControlShowing), but if the user uses the keyboard to select the values the event doesn't behave in the same way or the way that i need. The values in the combo are numeric values (1001,1020,2010,3010), when the user select one of the values, i need to fill another cell in the same row with the number selected plus some string, example combo:1001 cell:1001XPTO. So if the user presses 1 in the keyboard the combobox selects the 1001 and fills the cell with 1001XPTO, but if i keep pressing the keyboard to select the 1020, by pressing 0 and 2, i get the 1020 selected in the combo, but the cell remains with the 1001XPTO.
VS 2008 Datagridview With Unbound Combobox Columns?
Dec 14, 2010I am working with an Unbound DataGridView. I would like to vary the contents of a second combobox based on what is selected in the first. I have code to add the columns and populate the first combobox, but I can't figure out how to do the second one since it can (and usually will) have a different list for each row AND the list must change when the selection in the first is changed.
View 1 RepliesAdding Columns And Modifying Columns In Access Database Using NET/SQL?
Oct 15, 2009I am using the following code to alter an table imported from an Excel spreadsheet
Dim SQL As String = "ALTER TABLE receipts ADD payee integer, account integer, category integer, reconciled boolean"
Dim dataread As New OleDb.OleDbCommand()
dataread.Connection = Connection1
[code]....
Both ExecuteNonQuery() actions yields the exception message {"Syntax error in field definition."}The error message does not happen with the first if the boolean column is not there (I tried Tes/No as a definition - but that also failed.The second query to modify the ID column from autonumber to integer I assume fails because it is a Primary KeyHas?
Combobox With Multiple Columns?
Sep 6, 2006I'm filling a combobox from a dataset that has three columns, DealerID, DealerName, DealerState. I can only get one column to display. show two or more columns in a combobox? My code follows:
adapter.Fill(datList, "tblDealerID"))
Dim drDealer as DataRow
For Each drDealer in datList.Tables("tblDealerID").Rows
cboDealer.Items.Add(drDealer("DealerID"))
Next
How To Concatenate Multiple Columns Into Combobox
Jan 29, 2010Does anyone know how I can go about concatenating multiple columns from a table to populate into a combobox? I have 4 columns from which I need the data to show up in 1 line when clicking on the dropdown/combobox list. I'm not sure if I have to deal with the display member or the value member.
View 2 RepliesVS 2010 Combobox And Parent Columns?
Jan 16, 2012I am using the following code which populates a combobox with Location Codes from a table called tb_StoreLocations.
Dim SQLStr As String
Dim dtTableData As New DataTable
Dim dbDataAdapter As SqlDataAdapter
[code].....
VS 2008 Comparing Combobox To Database Field
Jan 30, 2011I have a combobox that displays saved names from the fullname column of my database. This works fine, all the items under the fullname column are added to the combobox. However, I also have several textboxes on the same form that also need to display data from the database, from the same record. So I was wondering if this was possible:
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VS 2008 Data From An Access Database To A Combobox?
Dec 14, 2009I know how to pull data from an access database and place it into a combobox, but I am trying to make certain that I dont have multiples of the same information.
Like one column is for countries of origin.
United States
Canada
Mexico
In the combo box, it should only list the United States only once, not multiple times.
VS 2008 Filtering Data From Database To Combobox?
Mar 9, 2010How to filter data from the database to combobox? For example, the database have the data, and i have a combobox, then i want to type the first letter, and the dropdown list comes down that the data have the first letter that i type in the combobox.
View 6 RepliesVS 2008 Load Combobox With Database Values?
Jun 5, 2009I would like to load a combobox with some values from an access database. On form load I load my information into a data grid view but if the user wants to add more information or edit what is selected in the DGV I will enable some text boxes and a combobox to show the selected data. I have not issue loading from the DB into the text boxes but the combo box has me a bit stumped. I have 3 columns in the database, periodno, start date and end date. I want to display the start and end date concatenated together. When the user selects a period and hits the button I want the dates to set a variable with the periodno that matches those dates.
View 1 RepliesVS 2008 View Data From Database To Combobox?
Oct 20, 2011sample code for show id from database ke combo box. i use sql database.
View 1 RepliesComboBox Populated And Displayed With Multiple Columns
Nov 8, 2010I have seen something like the following in many software. Combo box populated and displayed with multiple columns (for example stock code, stock description). But now I am only able to populate with stock code. May I know how to achieve this? I know it can be done by calling a form (And I can do whatever coding in this form) out when clicking on the combo box. But I am looking for better solution, or is it possible to populate the whole datagrid into the combo box as source instead of only the data.
View 3 RepliesIDE :: Add Rows To An Unbound DataGridView That Has Combobox Columns?
Dec 13, 2010I have a datagridview that has 1 combobox column (it will eventually have between 1 and 3 more) but I can't find anything anywhere on how to add rows to this column. I create the columns:
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Understand ComboBox And The Use Of Columns (or Equivalent) In .NET For Instance?
Apr 28, 2011I'm trying to understand ComboBox and the use of columns (or equivalent) in .NET For instance, I have a bound form with a combo box and a table that i want to feed it. In the table I have EmployeeID, LastName, FirstName. I want the "Bound Column" to be the EmployeeID, but the combo box to display the last and first name of the employee. This was very easily obtainable in VBA but is giving me some grief in VB.NET. I've played around with the datamember and valuemember properties of the combobox but have not had any luck.
View 2 RepliesVS 2010 Combobox That Is Connected To A Datatable With 3 Columns
Jul 6, 2010I have a combobox that is connected to a datatable with 3 columns. When i click a button i want 3 values from the selected item to be transferred to another datatable.The easiest way without any hassle to do this is via the Combobox.Text, Combobox.SelectedValue and....eyy nowhat?
View 8 RepliesAdding/removing Datagridview Columns Based On A Combobox?
Oct 26, 2011The user picks x amount of scenarios from the combobox, and x amount of columns appear in the datagridview. If the user changes the number of columns from x amount to y amount, the columns should be added/removed respectively but currently when y amount is chosen x amount of columns are in the datagridview.
I'm not sure how to do this, I've tried using an IF statement under the .SelectedIndexChanged event but the code adds columns until it reaches as high as it can go, then pulls an error saying too many columns.
Concatenating Multiple NonNull Columns Into Combobox Text Property?
May 19, 2010I'm trying to concatenate nonnull multiple columns from a database into the text property of a combobox. Right now, I'm receiving an "IndexOutOfRangeException was unhandled name, address1, address2". The line, "cboFreight.Text = drFreight("name" & ", " & "address1" & ", " & "address2")" is where the error is occurring. Here is my code for this section:
Dim drFreight As SqlDataReader = cmdCorrespFreight.ExecuteReader
While drFreight.Read()
'If "address3" <> "" Then
If IsDBNull(drFreight("address3")) Then
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Forms :: Concatenating Multiple NonNull Columns Into Combobox Text Property?
May 19, 2010I'm trying to concatenate nonnull multiple columns from a database into the text property of a combobox. Right now, I'm receiving an "IndexOutOfRangeException was unhandled name, address1, address2". The line in red is where the error is occurring. Here is my code for this section:[code].....
View 1 RepliesSQL Database Containing LOTS Of Columns?
May 24, 2012I'm creating a program which navigates through a tree-like structure. There are lots of items with a single 'parent' and many 'children'.
Using a SQL database, I've got all of the items information stored, but I'm struggling with how to hold the IDs for each Items children.
For example:
A: no parents, Children: B, C, D
B: Parent: A, Children E, F, G, H
F: Parent: B, Children: J, K, L, M
Where each item will have hundreds of children, for which I don't really want a column for each child...
Is there a simple (or more complicated) way to hold and retrieve a large number of integers within one column... i.e. as some kind of sub-database, or an array with the column??
Unbound To Any Database And Has 2 Columns?
Nov 23, 2011I have a datagridview.. It is unbound to any database and has 2 columns..1 is item name and other is amount/expense, incurred..I want the total of expense incurred be displayed in the textbox on button click ie adding the numbers in amount column..
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Updating A Database With Many Columns?
Jun 19, 2009I'm having an issue with using code to update a program that's trying to save data to a database. The problem is where I have found many answers on restricting the number of rows updated. All data that I have is on a single row in the database. Here's the code that's absolu
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Using Checkbox - Database Of More Than A 100 Columns
Jan 19, 2010I have a database of more than a 100 columns, what I would like to do is to be able when I do my search query, is to be able to choose using checkboxes which data I want to appear in my result table. For example, I have master datas (name, adresses, registration, ...) and financial datas (returns, ranking, ...) and I would like to be able to have either one of these two datasets or both of them in my result table. I'm assuming that I need to use "IF" sentences (if checkbox1 is true then...) but I have been struggling integrating my sql queries in VBA. how to implement this minor thing?
View 3 RepliesCompute Addition Of Columns In SQL Database In VB?
Sep 23, 2009i am currently doing a project on a marking program..I have to total up the marks for question B1 to C2 and compute the sum to 'Total' column.
Table name is 'Student'
Database name is 'Database1'
Converting Database Rows To Columns?
Nov 7, 2011I have a student database in ms-access format with 3 tables
1) class ( classid, classname)
2) subjects ( subjectid, classid, subjectname)
3) students (studentid, classid, studentname)
now i want to create a form to enter exam marks for the students in the following manner:
studentid, studentname, classname, subjectname1, subjectname2, subjectname3, .... subjectname-n
1, student1, class1, marks, marks, marks, marks, marks
2, student2, class2, marks, marks, marks, marks, marks
3, student3, class3, marks, marks, marks, marks, marks
how i can i convert subjectname from row to column and how to write a new table to store exam marks for this purpose.
DB/Reporting :: ACCESS Database With 3 Columns?
Dec 3, 2009i have an ACCESS database with 3 columns. I establish the connection with the VB 2008 Express and put the data in the form but i don't know how to add the text of a textbox in the database.
View 5 RepliesGet Info From 2 Different Columns In An Access Database?
Jan 8, 2010how do i get info from 2 different columns in an Access database and put them together in a drop down menu. (i know how to get data so that i can see it in just a textbox but i dont know how to put 2 data together and then display in a drop down.
another question is how do i save info that has been changed back into the access database i got it from
last question- how do i make a textbox only take numbers
Missing Columns In A Database Table
Mar 23, 2010I created a database in my project, and added a table and some columns to it. Now after making several changes to the program I decided to add some more columns, but for some reason those new columns don't show up in the SQL query builder or the database explorer. I realize that this is an oversimplified explanation
View 4 RepliesMinus An Integer From Database (from Columns In 2 Table)?
Jun 27, 2009-in my database..there are 2 tables..
1)Leave_application
2)Staff
-how do i type the code to minus out the number from "Leave_balance" (in the Staff table) with the number from "Days_apply" (in Leave_application table) eg: 10 days (from "Leave_balance" Staff_ID "S0001") - 2 days (from "Days_apply" ID "abc") = 8 days and then update the "Leave_balance" of staff_ID "S0001" with 8 days