Databinded Datagridviewcombobox Column Not Showing Anything In VB 2010?
Jun 8, 2012
I migrated a project from VB 2005 to VB 2010. I have a datagridview binded to a dataset populated by the MySql Connector. One of the columns, with integer values, is displayed in a datagridviewcombobox type column. In VB 2005 it worked perfectly. But now, once migrated to VB 2010, the column doesn´t show anything. If I change the type a a textboxcolumn type, it does show the data. The column in the dataset is Integer, and the column in the datagridview is Integer also. But, strangely, although the value of the cell (when debugging) is Integer 1, the formatted value is String "" (empty). If I add integer items to the combo manually, the formatted value is the first added item, but still string, and not equal to the value property. It is the same whether the column is designed and added programatically or visually with the editor of the datagridview. It seems a bug in the combobox type.
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Dec 17, 2010
I have a datagridview with 3 columns. The second column is a combobox which I want to bind with a dataset. How do I go about setting the column index for it as I am doing something like this.
Dim ComboCol As New DataGridViewComboBoxColumn
ComboCol.DataSource = SDS.Tables(0)
ComboCol.ValueMember = "Specie"[code].....
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Dec 23, 2010
I wanted to visualize to the user the diffrence if they opted for certain values. In mycase certain choises would show phonenumbers on intranet.To show how I wil leave the control names default. To recreate the the project. Start a windows form application, place a datagridview, and 2 bindingsources on the form To start we need some data to show and a list to choose from.To make a simple example I chosen to make a person class containing an Id, Name and Position.Id If the Position is a staff position it should be blue others should remain the default style.But lets start with the colorScheme Interface so we can store the colorscheme we want to show for a certain positionitem in the datagrdview It wil need back and forecolors but also colors for teh item whilst selected. To show the Displaymember we want to see I've also added the toString property that should shadow the toString of the object.[code]
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Jan 20, 2012
There is a multicolumn in datagridviewcombobox? what is code?
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Jan 15, 2012
just want to ask if a textbox with databinding can be used to search or filter data and display it to other textboxes with databinding on the same form?
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Jul 19, 2010
I Have a data table like this:
UserID Username Password Email
an a dropdownlist that is binded to this table
DisplayMember is Username
Value member is UserID
now how can I get forexample Email when an Item is selected?
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Sep 16, 2010
With this project, I created a SQL Server DB with related Dataset and DataTable a while ago with about 10 columnsWith the code below, I fill those columns with values in a new row and add to the datatableThe datatable is bound in a datagridview and all has worked fine until I tried to add a new column to the dataset/table. After adding the new column and rebinding the datagridview to the updated table, the DGV now shows the new column, but the data for that column fails to show up in the DGV.
Dim dt As Date = DateAndTime.Now
If My.Forms.DataGenerator.TextBox4.Text <> "" Then
My.Forms.DataGenerator.TextBox8.Text = dt
[code].....
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Feb 4, 2011
the values in the datagridview column datevalues is showing "February 03, 2011 6:30" but is writing in database "February 03, 2011 6:29:59" .i don't know how to fix this
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Dec 16, 2009
i have a DataGridView responsible for showing a bit of data and two of my columns allow for user input using comboboxes.The trouble is that one column only needs to show preset values in it's list, but the other needs to both show the presets and allow for the user to enter in their own values.i accomplish this by showing the editing control for the combobox with this bit of code:
Private Sub DGV_EditingControlShowing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DGV.EditingControlShowing
[code].....
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Nov 25, 2011
I have a datagrid on my form, it is set to loads CSV
Can someone tell me how I can show the values of a particular column (showing no duplicates) in a combobox?
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May 15, 2010
How do I show textbox column of a datagridview in multiline format using vb.net?
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Jun 8, 2011
I am Importing a Excelsheet(xls) in to my Application, but the date and Number column showing blank in dataset when comes to application. The values are there in Excel. Any other way to import the excel sheet to application, so that i should get all the values same as there in the excel sheet.
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Jul 25, 2010
The code below works as it is now. It creates a datagridview with a combobox on it. The combobox updates a common field called personid.
My problem is I need to add a new column to the left of the combobox. If I just add this field to the sql (right after "SELECT") for the dgv it doesn't work. It does work if I put it after the combo but I need to have this column to the left of the combo.
How do I go about doing this? The dgv is created entirely in code and this cannot be changed.
[code...]
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Jun 18, 2012
I'm posting a new thread to ask the following. I've added into a datagridview control a column that has DatagridViewCombobox style, in order to display specific values. Here is the code.[code]...
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May 2, 2012
I have a datagridview with datagridviewcomboboxcolumn bind to a nullableinteger datatable field
[Code]...
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May 16, 2012
I have a DataGridView that has a column defined as a ComboBox. When I select a value from this ComboBox, I'm not sure which Event I need to check. Ultimately, I need to read a DB Table to retrieve data based on the value selected from the ComboBox.
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Mar 23, 2011
I have added a DataGridViewComboBox to my DataGridView during design time. It has 0 items in it and I need to add a bunch of items to it during runtime.
In most controls, they have some kind of direct method like ".Items.Add("etc")", but for the life of me, I can't figure out how to access the DataGridViewColumn programmatically.
I can create a new ComboBox during runtime and add it to the DataGridView, but that's not what I need to do.
I played around with IntelliSense, I've searched on Google and I've looked through the documentation. The only thing I could find on MSDN was DataGridViewControlCollection, but I didn't see anything that would allow me to directly access that control.
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Nov 8, 2011
I have a DataGridViewComboBox in a dgv and I need to detect when the user changes the value....I thought I could use the CellContentClick; however, it doesn't fire when I select from the dropdown in my dgv so thinking I need a different method to choose from.
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Dec 8, 2009
Does anyone know how to trap f.i. the SelectedIndexChanged event in order to read the SelectedValue from the ComboBoxColumn?
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Jan 13, 2011
I have an issue with VS 2008 datagridview combobox control.
The combo box in question closes immediately after the CellValidation method that I wrote invalidates the input in the combo box cell. What I mean by closes immediately is that when the drop down arrow is left-clicked, once I remove my finger from the left clicking of the mouse instead of staying down so that the user can see the selection options the combo box just closes.
I'm currently using EditOnEnter as my EditMode style. (I've tried switching between the different option the same behavior exists). The datagridview is bound to a dataset which was created from my database in MS Sql Server 2005.
This problem exists on two different forms and occurs exactly the same way. I don't know what other settings to mention to help in the troubleshooting of this error, but please feel free to ask me any questions so that I may resolve this issue. By the way both forms use datagridviews tied to the same dataset, just different tables and table adapters.
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Aug 24, 2011
box withing a modal form. The combobox shows a list of ingredients where the displaymember is the IngredientName and the valuemember is the IngredientID, and a user would select an ingredient in the combobox and the returning value would be the ID for that ingredient. My issue is that within this same datagridview, i'd like to prepopulate it with items already existing in the database. However i'd like to set the display value in the combobox using the id value from the database. So if "Pasta" was the ingredient name and 101 was the ID, i'd set the value as 101 and it display Pasta in the combobox.
Here's what i have so far:
For Each row As ListViewItem In listIngView.Items
Dim i As Integer = dgvIngEdit.Rows.Add()
[code].....
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Nov 18, 2009
I am adding a DataGridViewComboBox Column to a DataGridView. The column is added But when I click onto the dropdown arrow, nothing show up in the cell.
Dim lstCol As New DataGridViewComboBoxColumn
lstCol.HeaderText = "Type"
lstCol.DisplayIndex = 0
[code]....
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Oct 22, 2010
The form opens a simple form to accept a password if a name is selected from a dropdown. The form is opened modally from the validating event. If I select an item, fill in the password, close the modal form , it will not let the parent form close depending on how I exit the dropdown. When I look at the closing event cancel is set to true implying that the control still thinks it needs vaidating.
It works if i leave the dropdown cell in focus when I hit close.
If I click (even just once so the dropdown still is highlighted but just closed) on another cell in the grid the form will not close. It corrects itself if I repeats the first method.
Even worse if I press enter twice it crashes without going through any of my code when the grid tries to do its own commit edit on the editableControl but seems to have a wrong reference as it tries to use the DataGridViewComboBox as the editablecontrol and gets a cannot cast exception
Updated as I have found the cause.
The pop up password form is a home brewed modal form by disabling all open forms but leaves some menu items active.(mdi is used). It is the disable form that causes the issue. Without that it always works. So it seems the grid cant handle being disabled while changing cells.
A solution that works is to use ShowDialog but that changes the systems behaviour so I may not be allowed to do that.
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Nov 15, 2010
I'm writing a help application for the Customer support team at my company to help agents ask better questions when customers report problems. In it, I've got a SQL database that contains all the products, topics, and questions. The layout is similar to the following:
Products Table:
Product_ID Product Name:
Topics Table:
Topic_ID Product_ID Topic
[code]....
I don't know if I'm making myself clear, but I basically need to do the equivalent to the following SQL statement: "SELECT PRODUCT_ID FROM Products WHERE PRODUCT_Name = LstProducts.SelectedValue"
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Aug 15, 2011
I have a DataGridView which populates from an SQL query just fine in default mode
using these table names
[firstName] [varchar](20) NOT NULL,
[lastName] [varchar](20) NOT NULL,
[code]....
I have edited the column headers and set the column names to the same values as my table names yet the data is not showing in form load I have set datagridview.AutoGenerateColumns = False I know the data is there if I delete datagridview.AutoGenerateColumns = False then the data is shown with the default headings?
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May 23, 2012
I have two text files, the first text file has two columns separated by a space (" ") and the second text file only has one column.
The column 1 in text file 1 and text file 2 match albeit in different order, what I'm trying to achieve is for every field in column 1 text file 2 I want to search for column 1 in text file 1 and display the matching column 2 field in column 2 text file 2.
Dim*OpenTextFile*As*String*= IO.Path.Combine("C:Test1.txt")
Dim*OpenTextFile2*As*String*= IO.Path.Combine("C:Test2.txt")
Dim*SaveTextFile*As*String*= IO.Path.Combine("C:Test2.txt")
[code]....
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Apr 9, 2011
I want to move the cursor from column 1 to column 4 but what happened instead the cursor moves to column 5, this happens when I use the enter key event. but run well if I double click. The following description of the program: there are 7 columns of code, item description, unit, price, qty, discount, item amount code when key enter press :
[Code]...
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Nov 15, 2011
Unable to display data in datagridview : vb 2010 express + mysql server 5 + odbc connector
1. I am able to connect database successfully. I am using arraylist to set data.& also i m
getting till it set to dataview (Object name )
2. Till now i am not added any column name in datagridview property setting .
[add/remove column]'[code...]
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Mar 16, 2012
I have the code which gets HTML code and puts it in a richtextbox with seperate lines.I would like the richtextbox to delete each line which doesnt contain a url in it.
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Mar 18, 2012
VS 2010 ContextMenuStrip not showing?
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