20,432 questions
0
votes
1
answer
58
views
Winform VB.net Datagridviewtextboxcell selectionstart and selection length
I Have a question about a winform:
I need the selection start and length of textboxcell.
As it is now i always get the start and length of a previous edit (eg. the values are one edit behind the ...
0
votes
0
answers
49
views
Disable row resizing on datagridview c#
I wounder how to disable or prevent users from resizing Datagridview Rows and also disable the click on the horizontal line of the rows.
I have tried setting the DataGridView.AllowUserToResizeRows to ...
0
votes
1
answer
65
views
Focus DataGridView control on a specific cell
I know there are multiple posts on this but their solution do not work for me.
In a WinForms application in .Net 8.0, I have added a DataGridView control.
Trying to set the focus to a specific cell ...
- 11
1
vote
1
answer
33
views
Setting the vertical alignment of grid cells
Is there a way to align the top of the cell entries in a grid row when the cells contain text that spans more than one line?
Example:
Test
'F'⎕WC'Form'
'F.G'⎕WC'Grid'('Values'(1 2⍴('foo',[0.5]'bar')'...
- 11.4k
0
votes
1
answer
33
views
How can I add items to DataGridViewComboBoxColumn
I have a a DataGridView which has a list assigned as a datasource and that list contains objects, in that list I have a List which contains objects and this object has a 'name' field. I created an ...
0
votes
1
answer
43
views
C# DataGridView, automatic RowHeaders size calculation
I have a custom Gridview inherit from DataGrieviw, with an automatic RowHeadersWidthSizeMode set.
RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders;
It seems ...
- 94
0
votes
2
answers
60
views
How can I optimize loading large datasets in a DataGridView in C# (.NET Framework)?
I'm developing a Windows Forms application in C# that loads a large dataset into a DataGridView. When I load more than 10,000 records, the UI becomes very slow and unresponsive. How can I improve ...
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0
votes
1
answer
37
views
how to pass the concatinated column from datagridview to another form with specified text boxes? vb.net, mysql xampp
im using vb.net and I've ran into a problem where i have to concatinate names (e.g. sName, fName, MI) in mysql and it successfully shown in my data grid but the problem was I cannot pass the ...
0
votes
1
answer
58
views
Where does DataGridView get its default DateTime format?
I am trying to determine where the DataGridView is getting its default format string to convert a DateTime to a String.
As seen in the screenshot, on my system the date format used is yyyy-MM-dd h:mm ...
- 5,246
0
votes
1
answer
33
views
How to allow user to edit column names of a DataGridView
This post generally asks how to edit the column names of a DataGridView. Here, I'm specifically interested in allowing the user to re-name the displayed column headers themselves.
This answer points ...
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0
votes
1
answer
52
views
How can I add specific cells from one DataGridView in form2 to another DataGridView in form1
I am working on a .NET 8, C#, SQL Server project which is a stock management system.
My issue is: I have a DataGridView in one form which is used to save invoices like this screenshot:
enter image ...
- 3
0
votes
1
answer
76
views
Transposed editable DataGridView from list and datatable with vb.net
I'm Trying make Transposed editable DataGridView from list and datatable with vb.net.
so in Datagridview1 Transposed editable (From list) with result in Datagridview1 non Transposed and non editable ...
- 295
0
votes
0
answers
58
views
ReasonsGridView_CellFormatting messes up the datagridview display
I looked at this post:
How can I change the background color of a row from my datagridview if column 1 holds a string with "Aborted"?
to implement the change I want. But there's a ...
- 21
0
votes
0
answers
29
views
how to make the user not repeat the item (productname) in the datagridview with the cellendedit and EditingControlShowing events in the vb.net
I'm trying to make the user not repeat the item (productname) in the datagridview with the cellendedit and EditingControlShowing events in the vb.net.
You can see the gif file in this post 2 items are ...
- 295
0
votes
0
answers
20
views
how to maintain beginedit with ProcessCmdKey in datagridview with vb.net
I'm trying to maintain beginedit with ProcessCmdKey in datagridview with vb.net
So I want to tab once in keyboard then beginedit in the productname column and double tab or twice tab in keyboard then ...
- 295
0
votes
0
answers
66
views
error Option Strict On disallows operands of type Object for operator '=' in datagridview with vb.net
I have an error Error BC32013 Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity.in datagridview with vb.net
The purpose of the ...
- 295
0
votes
2
answers
76
views
DataGridViewCellPaintingEventArgs: Infinite repainting loop?
I'm trying to customize certain cells in a WinForms DataGridView, but I'm running into an issue where the painting event is firing over and over again non-stop forever, even when not scrolling through ...
- 75
0
votes
0
answers
43
views
why I use 1 form as view and insert becomes an error in the datagridview CellValidated event with vb.net
I'm Trying to use 1 form as view and insert but becomes an error the datagridview CellValidated event with vb.net when I do a click in column Productname .
can I disable the event when I use the form ...
- 295
0
votes
0
answers
100
views
How to make bindingsource add new only limit one row in DataGridView with vb.net
I'm Trying to make bindingsource add new only limit one row in DataGridView with vb.net So if the user doubles tab in the keyboard, two empty rows appear in the DataGridView or avoiding double addnew(...
- 295
0
votes
1
answer
54
views
C# DataGridViewComboBoxColumn Index out of range setting HeaderText in Designer file
I have a DataGridView on a form which has a ComboBox column in it.
There is no data source for the grid when the form loads as it gets loaded to the grid by another method triggered by the user.
When ...
0
votes
1
answer
65
views
how to maintain Selected Rows from a DataGridView Control after inserting,updating & deleting with bindingsource in vb.net
I'm Trying to maintain Selected Rows from a DataGridView Control after inserting,updating & deleting with bindingsource in vb.net.
I've also used the "DataBindingComplete" event ...
- 295
0
votes
1
answer
50
views
Access to the Cell values in each row of Datagridview
I write a foreach loop to access the value of all cells in each row of datagridveiw, but I have an Error
"DataGridRow' does not contain a definition for 'Cells' and no accessible extension ...
- 60
1
vote
1
answer
83
views
DataGridView I want to format the date in the tenth cell from the current date 2024-11-18T10:59:00.000+0000 to 2024-11-18
DataGridView I want to format the date in the tenth cell
from 2024-11-18T10:59:00.000+0000
to 2024-11-18
The history appears to be very long and all I want is history.
The date is showing too long and ...
- 13
1
vote
1
answer
170
views
How to refresh via bindingsource in DatagridView in the main form when updating in other forms without closed or not in VB.NET
I'm Trying to refresh via bindingsource in DatagridView in the main form when updating in other forms without closed or not in VB.NET
Please Guide me
Thanks
Code in autocompledatagridview (Form main)
...
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1
vote
0
answers
128
views
How to insert to a database without looping with vb.net and Have an error Value cannot be null in CellEndEdit
I'm Trying to insert to a database without looping with vb.net and Have an error Value cannot be null in CellEndEdit
This post I refer to @dr.null
Actually, this is related to the previous post link
...
- 295
-1
votes
2
answers
117
views
How do I show a wifi signal strength meter in a cell of a datagridview? In C#
I have a list of different IOT, in a datagridview, in C#, that I would like to show WIFI signal strength for each on each row. This is for my own personal use.
I have found a 'Signal Strength Control ...
1
vote
1
answer
119
views
Is there a way to disable drag selection in a DataGridView without disabling MultiSelect?
I am trying to display data in a table format and allow users to pick cells. However, they should only be able to pick 1 cell per column, which is why MultiSelect is required.
Example of 1 cell ...
- 13
0
votes
1
answer
62
views
When click a row in a datagrid view , how data are autofill to relevant input fields in same form in C#?
I am doing a project on c#. I have created forms. In my userform, there are 3 input fields for user details as username, phone number and password . when i click the add button it added details to ...
0
votes
0
answers
10
views
Combobox cell in DataGrid, Dropping down in one click instead of 2 - Possible?
I have a form that has a datagridview in it. I have bound this data with properties from a different class. The populating of the grid is working along with the populating from the dropdown is also ...
-2
votes
1
answer
72
views
C# Incrementing Interval
I'm trying to achieve an interval the increments with each step. If the initial interval is 30 and the increment level is 1: the next interval is 31, then 32, 33...
int ii = 1800
int ib = 60
private ...
- 19
1
vote
1
answer
56
views
Shift DataGridView up by one row
I've found this code to shift a column down by one row:
private void ShiftColumnByOneRow(DataGridView dataGridView, int columnIndex)
{
if (dataGridView.Rows.Count > 1 && columnIndex >...
- 19
0
votes
1
answer
45
views
change each row color in gridview c# [duplicate]
How to do like this , each row has brown and white color in gridview c#.
foreach(DataGridview row in datagridview1.Rows
{
row.DefaultCellStyle.BackColor = Color.Brown;
row.DefaultCellStyle.BackColor = ...
- 1
0
votes
0
answers
15
views
My grid cannot be found in pageSource for automation test using WinAppDriver
I have a winforms project which uses clgride / clrow / etc. However, I cannot find the related elements in the real pageSource, so I cannot fetch the cell and fill in data.
Could you share how I can ...
- 11
0
votes
0
answers
21
views
C# Graph Auto Height from Maximum Value
I want to draw a graph, that shows integer values, and the maximum value sets the height for the rest of the entries. I'm using Paint and Rectangles. For example, if the overall graph height is 200px -...
- 19
0
votes
0
answers
38
views
Datagridview error. System.IndexOutOfRangeException: 'Index 1 does not have a value.'
I am using 2 bindlist _productList and _resultList. _resultList shows the result of when a barcode is searched. and added to _productList. _productList has an option to remove and add using buttons.
...
0
votes
1
answer
155
views
how to Force user only select suggested entry from datagridview Autocomplete textbox in VB.Net
I'm Trying to Force user only select suggested entry from datagridview Autocomplete textbox in VB.Net
and one more I want the "Unit" column to appear according to the database when the "...
- 295
0
votes
0
answers
25
views
populating C# Winform DatagridView from MySQL but the records are per row (transposed) [duplicate]
Description
Code
Debit
Credit
Electricity Expenses
101020220
1,000.00
Rent Expenses
10102030
5,000.00
Fuel and Oil
110201010
2,000.00
Receivables
10301020
8,000.00
Grand Total
8,000.00
8,000.00
...
- 1
1
vote
1
answer
101
views
DataGridView Editing in multiline mode
How do I make the DataGridView show multiline text when it is being edited?
I added:
dataGridView1.Columns[1].DefaultCellStyle.WrapMode = DataGridViewTriState.True;
dataGridView1.AutoSizeRowsMode = ...
- 19
1
vote
3
answers
92
views
DataGridViewComboBoxCell with different entries, as selected in another DataGridViewComboBoxCell
I've been struggling with a problem of having two DataGridViewComboBoxCell columns in a datagrid. Upon changing an item in column 1 in given row, I want the corresponding cell in column 2 to change ...
- 91
1
vote
0
answers
35
views
Excel export: extra row added above headers and missing second column from DataGridView in VB.NET
I'm working on exporting data from a DataGridView to an Excel sheet using VB.NET. However, I'm facing two issues:
An extra row is being inserted above the headers in Excel
The second column from my ...
0
votes
0
answers
63
views
DataGridView AutoGeneratingColumn event property not found
I am attempting to add the "AutoGeneratingColumn" event to a DataGridView control programmatically:
DataGridView dataGridView1 = new DataGridView();
dataGridView1.AutoGeneratingColumn += ...
- 19
0
votes
0
answers
44
views
Add data to existing rows of BufDataGridView
I have a BufDataGridView called Data, and the data class of items is called Test. Data has 4 columns: Serial No, Location, Test1, and Test2. I have a function set up to import 40 rows of serial ...
0
votes
0
answers
64
views
System.Windows.Forms.DataGridView.CurrentRow.get returned Nothing
Private Sub SaveBtn_Click(sender As Object, e As EventArgs) Handles SaveBtn.Click
Dim enter As New Apptfm
' Ensure a row is selected in the DataGridView
If enter.DataGridView1.CurrentRow ...
- 9
1
vote
0
answers
48
views
Hoping implement color picker in a datagrid view. Code below launches the CP when the button in the DGV cell is clicked currentcell returns nothing
The currentcell in the code below returns 'nothing. Please help.
Private Sub dgvDMs_CellContentClick(sender As System.Object, e As DataGridViewCellEventArgs) Handles dgvDMs.CellContentClick
Dim ...
- 11
0
votes
0
answers
49
views
Slow performance on write with data-bound DataGridView
I have a Windows Forms app written in C# which uses 4 data-bound DataGridView (DGV) controls. They consist of text cells and of dropdown value cells. The entire layout (including the data binding) was ...
- 511
0
votes
1
answer
23
views
Using BindingListView with a composite predicate
I'm using BindingListView recommended here Generic IBindingListView Implementations and I wanted to apply a composite predicate as a BidingListView filter:
var lst = new List<DemoClass>
...
- 1,594
0
votes
1
answer
81
views
Datagridview Image Column - Retrieve Image Path
I have a datagridview that has a column for an Image. The user can choose an image file from their local computer and add it to the datagridview.
Bitmap bmp = (Bitmap)Bitmap.FromFile(...
- 37
1
vote
1
answer
52
views
Unable to open a link with UseColumnTexForLink: True
I retrieve external data including links to profile pages
In the "Url" column of the DataGridView, I configured it like this:
Column Type: DataGridViewLinkColumn
UseColumnTexForLink: True
...
- 75
0
votes
1
answer
53
views
Winforms C# - parse DataTable into existing BufDataGridView binding source
I'm trying to write code that parses through the rows of a CSV and imports them into an existing bufDataGridView binding source named "Test" with columns already named in the binding source. ...
1
vote
1
answer
115
views
why event datagridview RowPostPaint output image in row header becomes blurry in vb.net
I'm Trying to use event datagridview RowPostPaint but output image in row header becomes blurry and there is a white color on each side of the in image with vb.net.
If you look at the screenhot, the ...
- 295