VS 2010 - Making DataGridView Cell Span 2 Or More Columns?
Apr 1, 2011Is there a way to make a DGV cell span 2 or more columns?
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Change DataGridView Cell Color Based On Other Columns?
Apr 25, 2007I have a DataGridView that has been dragged over from the DataSource Tab. All works good.I need to have the background color of some of the cells changed based on other columns in that same row. Such as, have the background color of a cell Red if the Status column (not shown) relates to 90 days overdue. The next row may be different.
View 6 RepliesCreating Columns In DataGridView Error - No Cell Template?
Dec 7, 2009I have a DataGridView on my windows form. I am adding columns to the datagridview at runtime. In doing so, I create the columns by this code:
[Code].....
At least one of the DataGridView control's columns has no cell template.
I have looked and looked and I appear to be doing everything correct
DataGridView Cell Formatting - Red Columns Based On Values
Jan 12, 2009I want to make a certain column of my datagridview red based on values from 2 other columns. I have a "HI" column, a "LOW" column and a "Result" Column which are all strings. Now I want to make the result column red if it's values is less than the "LOW" columns value or if it's value is greater than the "HI" columns value. I tried the following code but something is wrong because cells that shouldn't be red are red:
Private Sub dgvTests_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvTests.CellFormatting
If dgvTests.Columns(e.ColumnIndex).Name.Equals("Result") Then
Dim RowValue As DataRow = TestTable.Rows(dgvTests.CurrentRow.Index)
[Code] .....
Connect To A Web Page - Extract A String Between <span Class="uniq_name_one"> And </span> Tags
Apr 13, 2009I need to connect to a web page, extract a string between <span class="uniq_name_one"> and </span> tags and display it in my program, wait 30-120 seconds and do it again....
View 1 RepliesHow To Fix Limited Columns In DataGridView In VB 2010
Jan 12, 2012How to Fix Limited Columns in DataGridView in Visual basic 2010
View 4 RepliesVS 2010 DataGridView CheckBox Columns?
Jul 28, 2011Here are quick scenarios: there are two chkbox columns "Parent" and "Child" In the Parent Column, you're only allowed to choose ONE chkbox AND the chosen chkbox in the PARENT shouldn't be available to check in the CHILD chkbox, while in the child you're allowed to choose as many as you want.
The selected records (checked chkboxes) should be transfered in the database after clicking the Consolidate Button.
[Code]...
VS 2010 DataGridView Columns Order?
Nov 30, 2010I have a dgv with 5 columns (combos) added with the wizard, then in the form constructor i set the datasource, value member, displaymember and datapropertyname for each one, after this i fill the main data table and set the dgv datasource with it.If i just do this and don't use the display index, the columns show in an wired order, doesn't show up like i defined in the wizard neither in the order of the sql statement.
For example, i add this columns (names):
B,C,E
Then if i use this select statement
[code].....
VS 2010 Order Of Columns In Datagridview?
Feb 10, 2012I have a form containing a datagridview and a groupbox containing 2 radiobuttons.If radiobutton 1 is selected only the order headers are shown.If radiobutton 2 is selected only the orderlines are shown.There also is a button called "show". When clicked the dgv gets filled with data.When I first select radiobutton 2 (orderlines) and I press the show button the columns in the DGV are in the right order (as shown in the code "strview").If I select radiobutton 1 still the columns are in the right order.HOWEVER...when I now select radiobutton 2 the order of the columns get all messed up.
View 8 RepliesVS 2010 - Reading Cell Value From DataGridView?
Jun 26, 2010I'm reading a cell value from a Datagridview, and this works fine in other projects, but not here?
HTML
Dim OldGUID() As String = Nothing
Dim X as Integer = -1
For X = 0 To Me.DGView.RowCount - 1
If Me.DGView.Rows(X).Cells(0).Value.ToString IsNot String.Empty Then
OldGUID(X) = Me.DGView.Rows(X).Cells(0).Value
End If
Next
It fails on the line: OldGUID(X) = Me.DGView.Rows(X).Cells(0).Value
with: NullReferenceException was unhandled - Object reference not set to an instance of an object.
The Cell has a string value and during debug I see the value, but it fails anyway.
VS 2010 Add Button To DataGridView Cell
Apr 29, 2011I have a one column DataGridView that I use to display data from a database.Is it possible add a command button to one of the cells in that column? I don't want a second column as a DataGridViewButtonColumn. I want the rows containing the database data and the command button row in the same column. Also, if that is possible, I don't want the button's width to be the same as the column's width. Is it possible to manually set the width property?
View 3 RepliesVS 2010 Datagridview - Hyperlink In Cell?
Jul 12, 2010I'm adding values to a datagridview programmatically (no dataset) according a value in a combobox. In one of the cells (cell is always the same) a hyperlink is displayed. How do I change that particular cell to a hyperlink-cell? If possible of course.
View 7 RepliesVS 2010 DataGridView And Changes Not Made To A Cell?
Apr 12, 2012I have a DGV bound to a data adapter. I have a button that loads a form with a reference to the DGV row. When the form is loaded, it has a TextBox to type a value, that modifies one of the cells of the row. When the form closes, the cell.value is properly modified, but saving the DGV doesn't save the new value of the cell to the DB table. I'm assuming this happens because the DGV hasn't had physical interaction. Also, this particular field is a password field, so the whole column is being hidden from the view.It seems that a DGV change is noted by physically clicking in a cell and it stores some data telling the adapter there have been changes. The thing is, this is done on a per cell basis, and only if the cell has been clicked. Well, this cell is hidden, so even though the value will be changed, you could never click or select that cell.Is there any other way to force the DGV to accept changes made to it from outside actions of just assigning the cell.value from a button click and not phsyically changing it in the DGV?
View 1 RepliesVS 2010 Datagridview Cell Formatting?
Jan 21, 2012When a certain form (containing a datagridview (dgv)) is first loaded, the dgv cell formatting event is triggered by the line
dgv_WorkHistory.DataSource = ds_WorkHistory.Tables(0).DefaultView This successfully adds some background colour to a few cells in the displayed table. After this the next line of code is executed. The problem is that if I then try to load a different table (by choosing one from a listbox), the new table displays OK but without the desired formatting. Why?
Stepping through the code I find first of all that when I click on the listbox the dgv cell formatting event is instantly raised (immediately, even before any code in the listbox click event is executed). Why does clicking on the listbox trigger the cell formatting event?
Then, when execution reaches the line quoted above for the second time (remember it triggered cell formatting the first time round) it doesn't this time trigger it. The next line of code is executed instead. Why has the behaviour changed?
VS 2010 Focus Cell On New Row In Datagridview?
Feb 15, 2012Is it possible to put the focus on a certain cell on the new row in a datagradview.
So when I add the row I can inmediately start typing?
VS 2010 - Making Arrays Into Panel Or DataGridView
Mar 15, 2012I am making a array (unknown value) into a grid for a game of pairs (where you must get both of the cards). So far I have specified the array to a specific size of either 6, 6 10,10 or 16, 16. using a button. The selection is defined from the button as specified before
Dim NumberOfCards(Selection) As Integer
Dim NumberOfCards(Selection) As Integer
Now I have a panel box which I want to add the number of rows / columns as the array sizes which I cannot do. But also add a image specific to all of them.
.net - DataGridView Cell Click Event In VS 2010?
Jan 7, 2011why the first code block below works, but the second code block does not? (Only thing I can see is the
Handles DataGridClaims
syntax
Block 1
Private Sub DataGridClaims_CellContentClick_1(ByVal sender As System.Object, ByVal e As
[code]....
DataGridView Cell Click Event In VS 2010?
Jul 28, 2011I am a tad new to the DataGrid controls, but I am just curious as to why the first code block below works, but the second code block does not? (Only thing I can see is the
Handles DataGridClaims syntax
Block 1
Private Sub DataGridClaims_CellContentClick_1(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridClaims.CellContentClick
[code].....
VS 2010 - Saving String To DataGridView Cell
Apr 7, 2011Essentially what I'm trying to do is to save the value of a string() to a cell in the datagrid view. The problem is that when I close the program and reopen it the changed value isn't there... It's not saving properly.
Here is my code.
Dim BOCHURSTOTAL As Double = ((BochurimBindingSource.Current("Give_To_Bochur_Quant") * (bochurpr)) + _
(BochurimBindingSource.Current("Reg_Quant") * (regularpr)) + _
(BochurimBindingSource.Current("Priv1_Quant") * (private1pr)) + _
(BochurimBindingSource.Current("Priv2_Quant") * (private2pr)) + _
(BochurimBindingSource.Current("Priv3_Quant") * (private3pr)))
DataGridView1.CurrentRow.Cells("DGV1TotalColumn").Value = BOCHURSTOTAL
Me.Validate()
Me.BochurimBindingSource.EndEdit()
Me.BochurimTableAdapter.Update(Me.PuterDataSet.Bochurim)
VS 2010 Adding A New Line Into A Cell Of A DataGridView?
Oct 7, 2011I have searched for this, and not been able to find any examples where someone has done this. I'm trying to add a new line into the cell of a DataGridView so the text appears on 2 lines (of the same cell). Here's some code to explain what i'm doing:
Dim DS As New DataSet("aa")
Dim tbl As DataTable = DS.Tables.Add("bb")
Dim xRow2 As DataRow = tbl.NewRow()
[code].....
VS 2010 DataGridView Save A New Row Or Any Changed Cell
Jun 13, 2011I'm using a DGV and i'm looking for the best way to update the database whenever a new row is created OR whenever any datagrid view cell changes.
The following code works fine for new rows and my question is how can i adapt it to include ANY other changed cells of any other rows being or not new rows.
If Me.PECASDataGridView.CurrentRow.IsNewRow = True Then
Me.Validate()
Me.PECASBindingSource.EndEdit()
[Code].....
VS 2010 Select A Specific Cell In A DataGridView?
Jan 5, 2012I am making a program which remembers my last selected row in a data table. I have done this by adding a column with a CheckBox, upon CellClick the CheckBox is checked, and upon ellLeave it is unchecked and the new cell is checked, after every action a Update command is run. There will never be more than one row with a checked cell in the DataGridView,however, the data table is in a relationship with other tables, so there may be more checked cells in the data table itself. My problem now is selecting the row with that cell when I open the program and when changing between other data tables and back again.All solutions I found on selecting a specific cell in a DataGridView are referring to index numbers, and in my case I need it to find a data value in a column, I do not know the specific row, only that one row contains the value of True while everything else is False.
View 4 RepliesReading Excel Into DataGridView And Typing The Data Columns VB 2010?
Sep 5, 2011In my application I read data (using data binding) from an Excel spreadsheet into a DataGridView. This works, but the data columns contain text fields (strings). I would like to set the data type for some columns to "Date" and Decimal. I cant do this on the DataGridView (error: cant change properties for data-bound stuff) and I cant figure out how to do it on the dataset or data-table that I bind to the DataGridView.The following is the code I use to read and bind the data:
Using con As OleDbConnection = New OleDbConnection(cs)
'
'open the OleDbConnection
[code]....
The commented out code (below the 'Todo: comment) causes a additional table, but I want to change the table with the data.
VS 2010 DataGridView Custom Grid Color For 1 Cell
Aug 30, 2011I've been trying to customise a datagridview but no luck so far, thing is, i want some of the cells to not have the same grid colour and width as all the rest of the grid. Do you guys know how can this be done? I know it is possible cause i've seen it before but i have no clue how to accomplish that.
View 4 RepliesVS 2010 DataGridView Programatically Editing Current Cell?
Feb 10, 2012I have a DataGridView and want to update the contents of the CurrentCell while the user is typing.e.g. In a cell of fractions I want the user to be able to enter .957 - As soon as the user types the . I want to programatically change it to 0. without the user being aware of the change.
View 3 RepliesVS 2010 Find Value Of Cell In Datagridview By Column Header Name?
Aug 25, 2011I have been using this code to find the value of the cell in a datagrid view
Dim eRow As Integer
eRow = dgv.CurrentRow.Index
MessageBox.Show(dgv.Item(0, eRow).Value)
This works fine when the columns unless the user changes the order of the column.
So what I am trying to achieve is to find the value if the cell even if the order of the columns is changed. Is there a way instead of saying column (0, eRow) I can add (ColumnHeaderName = "NameHere", eRow) or something along those lines.
VS 2010 Writing A String Back To A Datagridview Cell?
Nov 8, 2010I've made a function to convert a number and fraction string eg. "22 7/8" to decimal. I've no problem pulling the data from the current row cell to pass through the function. Checked it via a temp textbox i put on the form. What i actuall want to do is pass it back to another cell on the current row. Tried a few things but having no luck. Here's the code of what works. The name of the cell i'm trying to pass the result back to is called "BaseDec".
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim fact As String
[Code].....
VS 2010 Change Background Colour For Individual Cell In Datagridview?
Jan 12, 2012dgv_WorkHistory.Rows(i).Cells("DateOfWork").Style.BackColor = Color.GreenThis doesn't change the background colour - what am I doing wrong here?
View 16 RepliesVS 2010 Click DataGridView Cell - Change Its Background Image
Mar 9, 2012I'm trying to make a visual map editor, and figured that a DataGridView would be the best way to go. I would like to make it so that you can click one of many buttons to set which new image the grid cell will be set to when you click it. I've set up pretty much everything except that I can't figure out how to set the background image of the cell that I clicked.
[Code]...
VS 2010 DataGridView - Event When User Edits Checkbox Cell?
Jun 6, 2010I'm afraid this is a very simple question, but I can't figure it out... I hardly ever use the DataGridView (usually use a third party grid) so I never needed to do this before.Anyway, I have a DataGridView that is data-bound to a List(Of SomeClass). The grid is not ReadOnly, but I made every column ReadOnly except the very first, which is a boolean column so it displays a checkbox. This way, the user cannot edit any cell value, but he can check/uncheck the checkbox in the first column.
What I need now basically is an event that is raised when the user (not programmatically) changes the value of this checkbox. I also need to be able to retrieve the bound item from that event (from the row number I think?) but that should be no problem, I hope.Anyway, there's a bunch of events that looked promising but all have something I don't want:
1. CellBeginEdit - Fires before the checkbox value has changed, so can't use this.
2. CellEndEdit - Only fires after the edited row loses focus. I want to save it back to the database as soon as the user changes the checkbox value!
3. CellValueChanged - Same problem as nr 2.
I'm sure it must be possible for me to react as soon as the user changes the value of the checkbox? How can I do this?
