I've done this, the way i've always done it .. 100's of times before.. and now on this one form... bombs out... and will not linkup ...I have a DGV with 101 columns, and on this form only one of the coulmns requires a ComboBox (Drop Down List). It's the run's Status, and is one of three values..Pending, Running, Complete... so i'm loading the Combobox Datasource with a List (Of {Object}), like i do on several other DGVCombo Boxes within the same project.. (other forms)
I am populating a DataGridView from a DataTable with a DataAdapter (VB 2008 Express, SQL 2008 Express). The dgv is for editing (with SqlCommandBuilder) a SQL table. I have added a ComboBoxColumn ("Type"), with a list, and removed the column from dgv ("Reason") who's index it replaces. What I can't figure out is the binding(?) to have the selected text displayed the same value as that from SQL table that is being edited. The ComboBox displays an index of -1, I need the selected text to be the data from row and field which is to be edited. The list is constant. Code so far is below:
Public Sub LoadDgvComps() Dim myDA As SqlDataAdapter Dim dsComps As DataSet[code]......
How would i add a wild card for a directory, my code is reader = New IO.StreamReader("C:Program FilesStattrackconfigconfig_misc.txt"). i want the C: to be a wild card this way that if the computers local-disk is Z: then it will adjust to it.
I have a databound combo box column. When a value in another field starts with an 8, I want to make the combo box read-only and turn the background gray so the user knows it is read-only.
Here is the code I'm using, where am I going wrong? It doesn't change the backcolor to gray.
Private Sub dgvTest_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvTest.CellFormatting
Is it possible to attach a context menu to a oomboxcolumn in a DataGridView? That is I want the context menu to display after the user chooses an item in the combox.
I want to show with the DataGridViewComboBoxColumn two fields from groups table . But i want only link field "articlenb" to column, but a want o show filed "Articlenb" and I want to show fields "groupnb" and "groupdef"
My question is how do this?
Here is my code for ComboBoxColumn, with one field from groups table.
i am using a Datagridview on my form. It get's it's datasource from a dataset: grd.datasource=set_temp After that I add ComboboxColumns manually. At the end I loop columns and set values into that cells from the comboboxcolumns. Works perfect so far. Now I click on a header and the sorting is changed, and then the cells from the comboboxcolumns all lose their values, they are all empty.
Why and what do I do to avoid that? Or must i refill those manual Values after sorting?
I have a seach button inside an VB application that I want to search an Array of Strings using a wild character. For example I want to find all the chemicals that are C*H*O* this would include any combonations of C2H2O2 or any other combinations with C H O as molecular formula for databank...
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click Dim strSearch As String Dim intNumber As Integer
I have a child form in an MDI application with a datagridview comboboxcolumn. I'm filling it with string values. When I load the form independently of the parent, I am able to set values for the comboboxcells. But when the form is loaded as part of the MDi application, with the same exact code, the cells are empty.
I have a child form in an MDI application with a datagridview comboboxcolumn. I'm filling it with string values. When I load the form independently of the parent, I am able to set values for the comboboxcells. But when the form is loaded as part of the MDi application, with the same exact code, the cells are empty. I've spent hours trying to figure out why this is happening but have no idea.
I have a GUI which allows the user to select a report to view/edit. When the user selects a report, it shows the Items in the report. The Item has many properties - most of which are binding properly. One of the properties is Owner, and this is bound to a ComboBoxColumn.
Report
Items
Owner
I have done something very similar to this a few times and had no problems when I set the DataPropertyName, DataSource, ValueMember, and DisplayMember. The only difference is that this time instead of the Item type having an OwnderID it actually has an instance of the Owner object.giving the items bound in the list a self-referencing property that allows them to return themselves for the purposes of setting the ValueMember.However, When I bind it this way:
I get a lot of errors like: Unable to cast object of type 'System.String' to type 'Owner'.
and:
The following exception occurred in the DataGridView:
System.ArgumentException: DataGridViewComboBoxCell value is not valid.To replace this default dialog please handle the DataError event.I was able to get around some of these errors by binding it like this:
and also by making the ToString function on the Owner display the OwnerName property. This seems pretty hacky though - and I think I'm misunderstanding something fundamental as it still does not function properly.
I am trying to insert a wild card character (') in sql database, but error is coming that STRING IS TRUNCATED.
Text1.text="D'John Is Writing Dev's Books"
Here there are 2 wild characters (') in the text. When i try to insert this text in database, the problem is comming. The whole string should be inserted as it is, as well as to be retrieved as it is.
I am trying to read the file contents using System.IO.File.ReadAllText
After reading the file contents the special charaters gets replaced with some garbage characters like "?".
To eliminate this I have used encoding along with above method System.IO.File.ReadAllText(strFile, System.Text.Encoding.ASCII) But still it is not working.
With the two lists (t1s and t2s), I want to display t1s in a DataGridView, and in one column show the T2 property as a comboBox column, which dropdown will show the t2s list such that a new list instance can be selected. T2 has a Name property that should be used for displaying it in the comboBoxColumn.
I'm able to display the dropdown, but remaining a few problems:
1. How to display the correct comboBox "selection" on "load"?
2. How to change the T2 child object instance when combobox selection is made?
3. This is a really basic problem, which suddenly happened and I just couldn't understand what I have changed; The code marked BLUE now just shows empty cells.. While the AutoGenerated columns do show values.. Shouldn't those "manual" columns work?
I'm using Visual Studios 2008.I'm building an app that will migrate a user's Desktop, Fav's, My Doc's, and I need the last piece to scan the C drive for .pst and .nk2 files. Does anyone know how to do that? I found the following code on the How To from MSDN.[code]
I have a comboboxcolumn in a DataGridView. I have loaded int with string data that appears in the dropdown box. I have added an event to it for an SelectedIndexChanged. What I am trying to do is autosize the width of the cell in the column based on the string chosen in the drop-down box within this SelectedIndexChanged event. This seems to work but it does not work off the initial selection change. When I select the desired string in the dropdown box the width of the cell does not autosize. I am not sure why.
I was trying to get around this by wrapping an IF stmt around the autosize logic by saying if cell value = "" then cell.width = Max Width of all loaded strings/ However, I can't figure out how to access the string array loaded into the dropdown list
I am using VB 2005 professional and SQL Server 2005 express edition.
For the last two weeks I have been trying to have a datagridview control on a form that will have datasource from a dataset with two tables that are related. I want child the column to be a ComboBoxColumn where userts can select options and update the other data(from the other table).
I have two tables in an sql server 2005 database named computers:-
computers locations
Table computers looks like thisID is the primary key column) ID Location Computer139 Computer240
[Code].....
With the location column being a ComboBoxColumn so that when a user enters a new ID say Computer5,they have a choice of a dropdownmenu for the Location column. In the database table computers the item should be saved as well as the index value(to correspond to the LocationID).
easy way to simply load the data from database into a datagridview with one of the columns being a comboboxcolumn. Apparently there is no selectedvalue, selectedindex or value as in a combobox to return the combobox value. What I need is to verify if the database value is 'true' and if it is then I need to set the comboboxcolumn with a specific value.
Ex:
if ds.tables(0).rows(0)("flag") = "true" then datagridcolumn.selectedvalue = 1 else datagridcolumn.selectedvalue = 0 end if
I'm pretty new to VB.Net programming, but have already been able to figure out many things using this forum, but also via the many other forums on the internet.I'm currently stuck with a question though regarding getting the clicked value in a datagridview comboboxcolumn.When I use _Selected IndexChanged and then check the current cells value, what I get is the value before I clicked the new one in the comboboxcolumn.When I use _CellEditFinished, I can get the new value, but only after I selected another cell, or changed focus to another object.How do I get the new value from a DataGridViews ComboBoxColumn the moment I clicked it in the pulldown menu from the ComboBoxColumn?
Im trying to make the below statement as such if there is no items selected/blank then the search term is a wild card (all results) otherwise search it. the sql below only works when all fields match, not partial
I have the following code. I would like to perform a if then check via a button click before the user processes the information.
Private Sub TestBTN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TestBTN.Click If TBSearch.Text = "" & ".exe" Or TBSearch.Text = "" & "" Or TBSearch.Text =
[Code].....
I would like it to just check to see if the text box info has been entered in one of three formats.
I'm strictly looking for a language conversion here of this:List<?> I already have a work around I'm just surprised that I can't find the vb.net equivalent of a variable type of a "raw" generic list that takes a wild card.Java's mechanism here enables you to reference a list regardless of what T is.Java even enables you to go further and do things like:
List<? extends Number> List<? super Double>I tried: List(Of )
and that did not work. That only seems to work inside the GetType function.
I created on Employee master form. The details which i enter in this form is saving to sql table. But if i use Wild characters example in Name field if i enter "Varghese D'Costa", then the following error comes : Line 1: Incorrect syntax near 'Costa' Unclosed quotation mark before the character string ''.
To avoid this error how can i write codes. In VB.Net variable declared as string, in Stored Procedure and Table i declared as varchar The following are my VB.NET codes...
[ Sub MoveData() EmpCode = Trim(txtEmpcode.Text) Desig = Trim(txtDesig.Text)
