I Want to populate a combo box in vb 2008 with mysql, but when i run the thing that appear is "System.__ComObject"..kindly check the errors..
Dim conn As ADODB.Connection
Dim rs As ADODB.Recordset
conn = New ADODB.Connection
[Code].....
Imports MySql.Data.MySqlClient
Public Class Form2
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim conn As MySqlConnection
[code]....
I can't quite figure out how to populate the dang list with that code, am I doing something wrong?
Im trying to populate a combo box with a column in an excel file.Im not even sure where to start. I searched around but couldn't find the info I needed or samples to learn from.
Can anyone point me in the right direction to where I may accomplish this?
I am trying to get my head around datasets, etc. The following code pulls data from an sql server and stores it in a data set. I then set the grid's datasoure to this data set. Now I want to populate a combo box on 'form load' with information from a field (surname) within the authors table.How do I approach this? I can do it in design mode but I want to do it in code as I feel you get a better understanding of what is happening under the hood.
[Code]...
I am trying to create a unit converter program. At the moment I'm trying to populate my combo box with results that have been calculated. I have two sets of results to display. I want them displayed side by side and have been trying very hard to do this. So far I've managed to get the result to display but only the original unit, it's start, increment and end value. Not the converted unit, start, increment and end value.
Then I managed to display both the original inputs and the converted inputs but they were showing directly below one another instead of being seperated into two seperate columns, i.e. original input, start, increment and end and the converted unit, start, increment etc.
This is the code snippet I am working with:
lstTableResult.Text = "" + (FormatNumber(lcInputValue, CInt(mdDecPlaces))), "" + (FormatNumber(lcResult, CInt(mdDecPlaces)))
The code above is incorrect and shows errors, i.e. is asking for end of statement.
The code below works, but it is only one code line, I've just split into two to make it work... not what I actually want.
lstTableResult.Items.Add(FormatNumber(lcInputValue, CInt(mdDecPlaces)))
lstTableResult.Items.Add(FormatNumber(lcResult, CInt(mdDecPlaces)))
I am using the following code for populating the combo boxes in my application. It is really nice. If any one requires, may use this. It takes three parameters. The first, the name of the Combo Box and the second, the SQL Statement to populate the combo box and the third is the number of column to be displayed (from the SQL statement)
[Code]...
Recently started working with VB.NET, and I'm just playing around with the controls and everything. What I want to do, is populate a drop-down list or a combobox (on program load) with data from a dictionary. I'm used to php, so I tried a for each dictionary.items as newitem combobox.items.add(newitem) but I can't get it working. Can someone give me an example of this? And what if i wanted only the key to show in the drop-down, and the corresponding value shown on a label besides it when I make a selection?
[Code]...
I thought I would have a go at creating an inventory system - as I can learn VB.net on the way and its useful to use. The first hurdle I have come across is I would like to link a combo box with active directory to populate the name of who is requesting the stock item - can anyone point me in the right direction of how this is done please?
View 4 RepliesIf I want to populate 3 text boxes with information such as name, quantity on hand, and price from the selection of a combo box. Is there some all around code where I can get the information from the text file to VB .net ? Ive heard use arrays, then I heard arr file and none of these are seeming to work yet can some one please help me.
View 14 RepliesI am building a form in access database.
I have a combo box which is linked to a query which is looking up a unique reference number from a table called Tbl_Submitted_Requests.
What I need the form to do is auto populate the other text boxes when the user selects the unique reference from the combo box. How can I get the text boxes to auto populate with the data that is associated with each unique reference?
for starters not sure if this is the right place for the post considering that it includes MySQL and VB, its here.I'm trying to load data from one table into a combo box as the data you can select, this i have been able to do "tbl_Wind" using "WindDirID" and "WindDir"
also, I am trying to select (if it exists) a value from "tbl_date" "WindDirID" to select a value from the existing data in the combo box loaded from "tbl_wind"and finally, I want to be able to change the value in the "tbl_Date" depending on if a value is selected in the combo box.when a new record is created in tbl_date it uses default values, so there is always something in the field.below is about how far i got, and its the only part that works (extracted and edited of course to exclude the other queries)
[Code]...
Visual Basic 2008 I want to put data in combo box from MySQL database.
View 19 RepliesMy database name is "plant3", i have a table named "itemlist" which has a field named "itemname", "task", and "status". I want to show the itemname on combobox and when user choice an itemname the program will show all task and status for that item.
View 2 RepliesIm trying to capture the result of a combo box and time/date stamp this to mysql. I have a working connection between the form and the db able can anyone tell me how to achieve this?
View 2 RepliesI am a developing an application based on VB 2008 express and a MYSQL database.I have created a database called octupus_db and inside it there is a table called customers.I now have a combo box on my form and i want it to populate its contents from field called town inside the customers table. How do do this? [code]but now connection a table and a field with my application is the next night mare, tried .
View 2 RepliesMy program handles XML files that have certain elements within a root-child node that are identical expect for their inner text value. So while populating my combo box with all of a root-child's child element's names I get like five identical items listed. Which brought about the problem of selecting say the third item and getting the value of the first displayed. So I came up with a loop function that determines if the selected combo box item is preceded by one of the same name, if it is, then it adds +1 to a counter variable and keeps checking farther and farther up the list. Once it loops to an item that doesn't have the same name it exits and it reads the Xth (X = counter mentioned earlier) element's inner text from the file. This works great for elements 1, 3, 4, and 5. But not for 2. A while back when I was focused on this problem I discovered the root of the problem but I was unable to circumvent it. I'll put the loop below so you can see the problem in action instead of trying to follow my verbose explanation:
[code]...
whats wrong with my code?if i change the item from the combo box..the textbox not change or has an error?
conn = New MySqlConnection()
conn.ConnectionString = "server=localhost; user id=root; password=12345; database=gigzta; allow zero datetime=no"
strsql = "SELECT accNo FROM accinfo WHERE (completename LIKE '%" & ComboBox2.Text & "%')"[code].....
I'm sick today and cannot think straight but I have to get this done. I have an array: newarray() I need to populate this array if a condition applies as such:
[Code]...
I would like to populate a drop down list using values from the database. I would like to know how I can add to the dropdown list both the display member and value member straight all from the database
Display Name: Account_Name
Member Value: Account_ID
I am trying to populate a datagridview with the content of a text file.
the text file contents are as follows:
[Code].....
I get no error while building the project. The textline variables are being populated correctly.
I have the following dataset and datatable:
Dim topics As New DataSet()
Public Function JT_PullData(ByVal TableName As String) As DataTable
If topics.Tables.Count >= 1 Then
topics.Clear()
[Code]...
I am supposed to set the dataset and then set the values that would be shown.
What I want it to do, is when a id is selected to be modified, another form will pop up with the fields are filled in with the relative data. Every time I run this I keep getting the following error -- "Syntax error in string in query expression '(the wombat ID selected)'"when it gets to the following line of "fillformDataReader = fillformCommand.ExecuteReader()"What is going wrong and how do I go about fixing this error so the new form is populated with the correct data?
Dim fillformCommand As New OleDbCommand
Dim nameView, idView, regionView, sexView, ageView, weightView, lengthView, sampleView, commieView, descriptionView As String
[code].....
I am trying to populate an Access table with data from a csv file. Here is my code
csvConn.Open()
Dim objAdapter As New OleDb.OleDbDataAdapter
Dim objCmdSelect As New OleDb.OleDbCommand("SELECT * FROM [reporting.csv]", csvConn)
[Code]....
The csv has 58 rows of data. The Access table I get is 58 rows of the same data as the first row of the csv. Am I not using parameters correctly?
I have a form with a DataGridView and ComboBox, both of which are populated with data from an Excel spreadsheet, the source is unbound. My problem is in repopulating the DataGridView with data from another worksheet in the same Excel file when the user selects the corresponding value from the ComboBox. For example if they were to select January from the ComboBox then the DataGridView would load in and display the data contained on say Sheet2, selecting February would load Sheet 3 and so on. I am running Visual Studio 2008.
View 6 RepliesI have a few drop down lists that I'd like to populate from a table in an SQL database. I tried setting it in the DataBindings section of Properties but I guess that doesn't work.
View 11 Repliesif this question has already been answered many times, but I am new to VB and I don't really understand any of the examples I have found by trying to research this topic. I am using VB 2008 Express Edition. My List View is called listView.
View 4 RepliesI'm trying to create a treeview in a VB 2008 project that shows all the elements and attributes of an XML Schema.The MSDN documentation for XML schemas seems to imply that by loading the schema into an XMLSchemaSet and compiling it I should get access to all the elements and attributes with their values but this doesn't seem to work in practice.
Using a for loop such as:For Each elem As XmlSchemaElement In compiledSchema.Elements.Values
I can use elem.Name to get the element name (and attribute name with a similar nested loop) for a simple type but this doesn't work for a complex type.Whenever (and however) I try to get values for complex types I hit a brick wall.
[Code]...
I've been playing with a DGV. Let's say for my question here, I want a grid that is 10x10. I would like the font in each cell to be Arial 10 regular. Only one character will be in each cell (I'll use "M"). I would LIKE the cells to be 17 pixels by 17 pixels. But, if I manually force the column width to be 17, I get about half of my M and three dots "M...". I'm thinking this is a padding thing but as far as I can tell, everything is set to 0. See code and then more comments below:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
With DataGridView1
[Code]....
Question 1: How can I reclaim some of what seems to be lost space around the cell contents so I don't have to make them bigger than they need to be? I'd like them to be 17x17 with the single character centered within.
Question 2: Do I have to manually set the height and width of each row and column? I'm thinking the RowTemplate setting but can't seem to get it to work.
FYI: This is a new project with a DGV dragged onto the form. All changes have been made programatically.
I have a field in an access database with decimals in it. I am using ADO to read in the data and are trying to assign it to a textbox in a form. This works fine when its a whole number. But it doesnt seem to work when its a decimal for some reason.
I have declared the variable i have assigned the access field to as a double, but when i set up a test textbox which i point the variable at and times it by 1000, it doesnt work. Works perfectly when i change the access field entry to a whole number though.
This sounds like im not using the right syntax or something.
I have some code that is extracting tracked changes from a document. The trouble is its very slow, taking around 60 seconds to capture each tracked change. I originally thought that pagination was slowing down the code (its quite a large word document). However I have turned that off but its made no difference to the speed of the function.
[Code]...