Retrieves Data From SQL Database By Selecting Value In ComboBox?
Feb 3, 2010
how to retrieve data from SQL Database using SQL Connection by selecting the individual value in a ComboBox which the data in the ComboxBox is also retrieved from the SQL Database using DataBound. A 'Display' Button will be clicked to display the data in a TextBox, based on which value the user had selected.
Below is my current
Private Sub displayBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles displayBtn.Click
'Create Connection
[Code]....
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Mar 11, 2010
I cannot get my combo box to populate using a select statement from mysql database.
[Code]...
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Sep 2, 2009
I have a tabcontrol with a number of tab pages each of which contains a DataGridView control. I populate each DataGirdView form a local SQL Server. The method which does this works fine. The problem I'm having is I want to use the same method to populate each DataGridView control. I created a private member variable called mDataGridView as a DataGridView and use the TabControl SelectedTab property to determine which tab page the user has selected. I then try the following
[code]...
I then use mDataGridView in my method which retrieves data from the SQL database. Although the compiler dosn't gag at this it doesn't work. Am I right in thinking that mDataGridView references dgvQuoteTemplate?
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Jan 8, 2012
I am working on a small concept but since i am a novice in .net i am not getting the concept.I have 2 controls on the page.1st is Text Box: User enters the int value and that value is checked from database. In database there are 3 fields. One for ID, second for int value and 3rd for country.If the text box value in database is associated with country US then it should show US in 2nd control ( can be text box or combo box) in UI. Else for anything else it should show London.
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May 14, 2012
Is there a way to prevent a user from entering data into a ComboBox, rather then selecting, or can anyone suggest a routine to catch and prevent entries so the user can be made aware the they are not acceptable?
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Oct 15, 2011
I'm attempting to create a program where the login and password will be verified on an SQL database of user information. I keep getting the error "SQL Execution was unhandled" I marked the code that was causing the error in red. I'm using Visual Studio 8.
Public Class Form1
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code].....
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Apr 5, 2012
Two questions:
1) I have a stored procedure that retrieves item information from a SQL Express database. Should I attempt to do the rounding the stored proc or client side in the app?
2) My rounding needs to be custom. I have a figure that goes down to the 4 place meaing x.0000 if the 3rd digit is 4 or more then I would round up to the nearest cent x.00 if it is 3 and below I would round down. I have looked at the math functions in vb.net and I dont see right out the gate how to accomplish this.
So my question is should rounding be done in SQL or client side and if it is client side do any of you have pointers on how to slice and dice this?
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Jun 7, 2011
i have a combobox on the form and a datagrid viewer .no i want to display the table which selected on combo box..
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Jun 30, 2011
I got the System.Data.DataRowView when I tried to select the data from sql database. These are my code:
......
myCommand = New SqlCommand("SELECT FirstName +' '+ LastName FROM tblVisitor", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
[Code].....
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Mar 3, 2012
When i select an item in my combobox it raises the following errorColumn 'field1, field2' is constrained to be unique. Value 'test1, 1' is already present.The combobox is bound to the table to populate it with values from field1 witch is the first part of primary key of the table. (field2 is secont part of primary key).
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May 20, 2010
Here's how I'm trying to manually select a specific item in my combobox. cbEditCategory.SelectedIndex = cdEditCategory.Items.IndexOf(editItemCategory) I setup a msgbox to show "cdEditCategory.Items.IndexOf(editItemCategory)" and it's reporting -1. Why is it not giving me the right index?
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May 15, 2009
The problem I have is I have made a program which you select a value from a combobox and it changes the value of a url for a picturebox and thus changes the picture, I also have a button which randomizes all of the comboboxes so I will get something unique, but every time the program loads, and I hit random, it chooses the same numbers in order. If you need an example, when I press random the first time I get the number 7 for my first combobox, so the selected index=7, every time I load the program and press random it picks 7 for that combobox.
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Oct 15, 2011
I use a printcode in a Class, and a printcode by the Button in the Form.Olso i have a code for fill the ComboBox, with al printers.Is it possible to do a selecting in the ComboBox, with as results that the print go to that printer.
Class
Public Class formCapture
Private Shared img As Bitmap
[code].....
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Jul 13, 2010
Imports System.Reflection
Imports System.Data.SqlClient
Imports PSXSTL.Data.DataAccess
[code]....
How do i generate a new GUID and Add a new "CustomerName" to my table if the GUID doesnt exist.
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Jun 10, 2011
I'm having a problem to pull data from MS Access to my combobox. I know how to search one data using another data (e.g: using IC num to search name) but this time I just want to pull the data (e.g: name) that has several rows to my combobox. I think the method is the same but don't know where to change it.
Then when I added new names to the combobox, want to save it to my database, can each name be saved in different rows? I added the names to the combobox 1st, after that then I saved it. [code]...
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Aug 23, 2011
trying to put data from a database into a combobox. i've tried different way, still not working.
Public Sub SaveNames(ByRef SQLStatement As String)
Dim cmd As MySqlCommand = New MySqlCommand
With cmd
[code]....
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Mar 24, 2011
Im now creating an inventory system for my project.
i having difficulty with my project im using combobox to select data from database and i want to update the data. if i selected second row of the data it will update the first row of the data.
eg.
"comboboxitem_name" - red ball pen
- blue ball pen
- black ball pen
"quantitytextbox"- 100
"reorder_quantitytextbox"-20
when i selected the "blue ball pen" and fill the information that i want to update then press the submit button. the red ball pen will update with the information that i want to update to "blue ball pen" and the "red ball pen" will change it name to
"blue ball pen". and now i have two "blue ball pen", one with "red ball pen" information and the other one with original "blue ball pen" information.
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Aug 1, 2011
I got a Combobox with some items (item1-item7) to select and 54ish Buttons(sButton1-sButton54). Also an array(53) called Buttons. The array is filled with the items to select, like: Buttons(0) = "item 1, item 2" Everytime another item in the Combobox is selected, I'd like only some of the Buttons to change their Image. Therefore I got the array. If Item 1 is selected and Buttons(0) contains the item1 I'd like to change the Button1's image.edit: It works with changing the image of every Button:
sButton1.Image = My.Resources.image1
But I'd prefer to change all in one go (Loop) instead.
sButton(0) = "item1, item2, item3"
sButton(1) = "item2, item3"
sButton(2) = "item1, item3"
[code]....
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Feb 5, 2010
i am still beginner in coding, i am using vb.net 2005 and access. in my form i am having a radio buttons called DEPARTMENT: english
[Code]...
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Mar 5, 2012
I'm doing small system using database 03. I had function to add data into a comboBox. When i add a new data into the the same field using another form, then back to the main Form the comboBox does not update the current data in database..
Codes i tried:
'Form Load
Private Sub FrmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
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Jun 8, 2011
I have form with combobox I have database contained 2 filed "ItemID" and "ItemName" The combobox fill her data from the database from field "ItemName" I do when I choose in the combobox any item and save, the data saved in database "ItemId" Not "ItemName" by define string put on it "itemId" when the user choose any item in combobox I need when I get the data that saved in database the combobox value="ItemName"
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Jan 27, 2012
Here is the code for the loading the combobox. I want to load the combobox with the Name of client. so that user can select the Name and then the details which are associated with that ClientName are to be displayed in the desired textboxes.
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Jul 19, 2010
i want to view data(from database) in textbox or combobox itried to use the code as same as datagridview but it doesnt work
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Dec 14, 2009
I 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.
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Mar 9, 2010
How 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.
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Oct 20, 2011
sample code for show id from database ke combo box. i use sql database.
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Jul 4, 2009
how to call shape file in richtextbox by selecting option in combobox?
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Nov 9, 2009
my problem goes like this:i am making a system of a certain bakery...i already saved some products in the database and i also imported it in the combo box...my problem is this....from my combo box...i want to print it in the list box with its price
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Jul 26, 2010
I did populate data from db into the combo box and display it into the text field .
Below is my code :
Imports System.Data.SqlClient
Public Class MPEJobEntry
'declaration of connection string
[code]....
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Jun 30, 2009
i am creating app , its a question i am stciked at , i am using vb 2008 by using databinding my combobox has the list ready from one column but as selection change the values from all textboxes and labels should change as per the combbox's selection can anyone help
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