Datagridview Headers / Return Letters In Vb

Feb 16, 2010

way to return letters like a,b,c,d,.......,x,y,z,aa,ab,ac,ad,.......az,ba,bb,bc,bd,.......bz, in visual basic. I am adding them to the headers of a datagridview. Sort of like excel numbers the headers on columns.

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Use Len To Return Only Capital Letters?

Dec 8, 2011

Anyone know how to use the Len function to return only the capital letters of the string (for instance, APple would return 2)?

If not, is there an alternative way to return the count of the capital letters within a string?

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Add Row Headers For Datagridview In .net?

May 19, 2010

how to add the row headers to the Datagridview? We can normally add Column headers from the Properties. But there is no option for Row headers. Can we add them through the IDE? Or we need to do it dynamically?

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Importing A CSV Without Headers Into A DataGridView?

May 4, 2011

I'm importing a CSV without headers into a DataGridView using:

If ofd.ShowDialog(Me) = DialogResult.OK Then
Dim fi As New FileInfo(ofd.FileName)
Dim strDirectory As String = fi.Directory.FullName

[Code]....

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Put Text DataGridView Row Headers?

Jul 24, 2009

I want to number the rows in my datagridview. Basically the users want to know how many rows they have posted, so they can stop at a certain number.So I have done several web searches all giving the solution I came to on my own, but still nothing is showing! it's almost like there is a property I need to set to show text in the row header, otherwise it's somehow disabled or not visible, but I am not sure what!!!

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Column Headers Not Visible Datagridview?

May 27, 2012

I am populating a datagridview with data from a table and some unbound columns This is a large table and I want the form to fill the screen and the datagridview to fill the top half of the form. To do this, I have put a panel on the top and a panel at the bottom.I have anchored the dgv to the top left and docked it to the toplumnHeaderHeightSize is AutoSizehe issue is that the ColumnHeaders are not visible unless I click on the restore down button on the top right part of the screen

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Customize The Datagridview Headers Format?

Jan 3, 2012

Is it possible to customize the Datagridview headers format? I mean the column and row headers.

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Row Headers Of Datagridview Are Empty On Formload

Apr 6, 2009

I use a datagridview where the rowheaders frustratingly stay blank after I load the form. If I modify/add/delete anything the rowheaders pop up. then when I sort by clicking on a columnheader the rowheaders become blank again. all these actions (load/add/modify/sort) go through the same refresh function. I can't seem to figure out why the rowheaders sporadically show up. they should stay visible all the time. btw, datagridview.refresh() doesn't work

[Code]...

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VS 2010 Export DataGridView To XLS With Headers?

Feb 17, 2011

I am exporting the data in a DataGridView control using the Excel interop. It is working fine, except that it is not creating the headers. How do you include the column headers with the export?

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Custom ComBobox With Headers - Prevent Selection Of Headers?

Dec 15, 2009

I am working on a windows application using VB.net 2.0 and want to create a custom ComboboxControl which displays multiple groups. I was able to display the items in Custom combobox with headers. Below is the sample.

Header 1
Item 1_1
Item 1_2

[code]....

I want to prevent users from selecting the header items. I managed to revert back to the previously selected item if user selects the header item. Problem with this approach is drop down collapses and then reverts back to previously selected item. Is there a way to check, if the item being selected is a header item and if it is a header item, do not collapse the dropdown. Basically I want to implement behavior of HTML select list with optgroup.

1_1 1_2 1_3 2_1 2_2 2_3

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DataGridView Inserting New Row When Filling Column Headers

Jun 13, 2010

DataGridView inserting an extra row every time I populate with data. The row appears even if I only fill the column headers. This is causing problems when I try to get values of each cell. Is there a way to avoid this perhaps in properties?

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Export Excel From .net Datagridview With Column Headers?

Jan 27, 2011

I am using this code i found from links on this site to export data grid information to excel. it works great! I am trying to figure out how to first write the column headers to excel and then the data in the columns.

Private Sub exportExcel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exportExcel.Click
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook

[code].....

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Export Excel From Datagridview With Column Headers?

Mar 30, 2010

Export Excel From Vb.net Datagridview With Column Headers

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How To Enable Automatic Sorting Through Headers Of Datagridview

Feb 11, 2010

I have 2 issues- first if i use LINQ query as datasource with datagridview then how I can Find a row in datagridview and also how to enable automatic sorting through headers of datagridview if i am using LINQ.

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Interface And Graphics :: Painting DataGridView Column Headers?

Apr 1, 2011

IDE: VB Express 2008Problem: Painting DataGridView Columns.I have done extensive Google searches and found very little on the subject.I have searched this site to no avail.

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Apply 2 Toned Back Color To My Datagridview Column Headers Or Listviews

Mar 27, 2010

I'm new to VB 2008 and was wondering how to apply 2 toned back color to my datagridview column headers or listviews. Where the color is lighter at the top of the column header and then becomes darker towards the bottom of the column header. It seems most apps use them these days.

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Definig DataGridView Column Headers Font Style At Design Time

Jul 11, 2010

I am developing a project using VB2010. In the attached example I created a Form.

On tha form I put a GroupBox Containing a DataGridView.

I am trying to set, at Design time, the ColumnHeadersDefaultCellstyle Font of the grid, defining the Font, the size and the style (Bold). After saving the project or running it, The Font properties of the grid headers are changed to the Font properties of the containing

GroupBox.

Why is that so? How can I set, at Design Time, a different font for the Grid Column headers and the GroupBox?

To demostrate the problm - Try to modify the Font of the grid headers, in the attached example,

to "Bold" "Size 12", Run the application and see the result.

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Datagridview Specif Column(s) Capital Letters

Apr 25, 2011

I have a datagridview with 4 columns bound to a datasource. In the first column the user can only type numbers, in the 2nd, 3rd and 4th only letters (done with keypress and editingcontrolshowing).

Now I want that the user's input in the last two columns automatically gets converted to capital letters, regardless whether he is using Shift or has Caps Lock turned on.

[URL]

Private Sub DataGridView1_EditingControlShowing(ByVal sender As Object,
ByVal e As DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing

[Code].....

My only problem is that when I double click a cell in the 3rd or 4th column (those where I want uppercase letters) and then one in the 2nd column, the text in the cell in the 2nd column is showed in uppercase letters too.

Note: It only shows the already present letters in uppercase. If I type extra letters they will get normal font (so lowercase if I don't use shift or caps lock, and uppercase if I do use shift or caps lock). If I don't type any letters and unselect the cell the text changes back to as it was before selecting.

If I double click another cell in the 2nd column (after i clicked one in the 3rd or 4th column and then one in the 2nd column), the present text stays the same, so it don't get showed in uppercase letters.

how it comes that only the first time that I double click a cell in the 2nd column after i clicked one in the 3rd or 4th column the present text gets converted to uppercase letters and, more important

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Highlight - Specific Letters In Datagridview Using Vb 2010?

Jan 4, 2012

how to highlight. specific letters in datagridview using visual basic 2010

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VS 2008 DataGridView Column In Capital Letters

May 29, 2010

I need that a particular column in a DGV necessarily be written in capital letters, without the user having to press "BloqMay"... for the rest of columns the user will write normal.

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Datagridview Multi Text Select - Highlight The Letters

Dec 21, 2010

I want to highlight some of the letters in each row of col1

[Code]....

whether the text can be said in reverse color or in bold font is ok for me.

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DataGridView Input Validation - Certain Column On Datagridview Should Accept Integers Only, Otherwise, It Will Return A Messagebox

Jun 5, 2011

Some codes here on how could I validate my datagridview? I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox. Kindly include on which event it should be posted.

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VS 2010 Filtering The Datagridview Column Headers Using Datetimepickers In Vb 2010

May 16, 2012

I have a datagridview populated from a CSV file in vb.net. I have 2 datepickers, 1 button. see the attached images. Image1->before filtering

[Code]...

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NumericUpDown With Letters - Show Only The Range Of Letters

Apr 2, 2012

I'm keeping track of some things that are numbered and others that are lettered; while NumericUpDown is perfect for selecting numbered things, I need an analogue for selecting lettered things. The obvious choice would be a listbox that just contains all the letters of the alphabet. But I need to show only the appropriate range of letters, so if I want to use a listbox, I need to write a function that populates the listbox with the first n letters of the alphabet; if n > 26, it should continue with aa, ab, and so on. How do I do this?

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Return Get Datagridview Cell Value?

Mar 15, 2010

Im trying to return the value contained in a datagridview cell upon clicking on the cell

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Limit What A Data Set Will Return To A DatagridView?

Dec 8, 2009

I am trying to limit what a data set will return to a DatagridView. Is this possible?For example if I wanted to only show Data that was logged between 2 dates.I have the full Dataset done and am trying to figure out how to use a button to then manipulate the data to show what I want to and not every record in the dataset.

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VS 2010 : Return A Row From Datagridview As Array?

Feb 23, 2011

I have been having major problems with Datagridviews and attempting to retrieve one row at a time and then assigning that row to an array , Which can be used in another function.I have tried numerous ways to achieve this but none of them seem to work. something like 'Start array of no values to be filled during the while.

dim myArray as Array
While myDataGrid has Rows
assign myArray the values held within the cells of the first row
send myArray to another function for processing
END WHILE

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DataGridView KeyDown/KeyPress To Return New Cell Value?

Apr 15, 2012

how to handle the keypress event but I can't find a way to update the datagridview cell with the new contents of the editing textbox control. If I add a character to a the text of a cell I want it to react with the new cell contents.

Private Sub DGV_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DGV.EditingControlShowing

[Code].....

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Dosen't Return The Gratest Number In The Datagridview?

Mar 29, 2012

I have som problems with my litle loop, it dosen't return the gratest number in the datagridview.

Dim NumberOfRowsInDGV1 As String = dgv1.BindingContext(dgv1.DataSource, dgv1.DataMember).Count
Dim SearchResultat As String = 0
Dim SearchRow As Integer = 0
NewNumber = 0

[code]...

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Trigger Sub After Hitting Return Key While In Cell In DataGridView

Nov 23, 2009

How do I trigger a sub after the user hits the Return key within a cell in a specific column in a DataGridView. I know its columnIndex 1 that I care about. I want the sub to fire when the user is editing (i.e. DataGridView1.CurrentCell.IsInEditMode = True).

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