Sometimes you want your application to perform actions based on user selections within a DataGridView control. Depending on the actions, you may want to restrict the kinds of selection that are possible.
For example, suppose your application can print a report for the currently selected record. In this case, you may want to configure the DataGridView control so that clicking anywhere within a row always selects the entire row, and so that only one row at a time can be selected. You can specify the selections allowed by setting the DataGridView. By default, users can select multiple rows, columns, or cells by dragging with the mouse, pressing CTRL or SHIFT while selecting to extend or modify a selection, or clicking the top-left header cell to select all cells in the control.
To prevent this behavior, set the MultiSelect property to false. Users can delete rows only when the current cell is not in edit mode, the AllowUserToDeleteRows property is set to trueand the underlying data source supports user-driven row deletion.
Note that these settings do not prevent programmatic row deletion. The current selection mode restricts the behavior of programmatic selection as well as user selection. You can change the current selection programmatically by setting the Selected property of any cells, rows, or columns present in the DataGridView control. You can also select all cells in the control through the SelectAll method, depending on the selection mode. To clear the selection, use the ClearSelection method.
If the MultiSelect property is set to trueyou can add DataGridView elements to or remove them from the selection by changing the Selected property of the element.
Otherwise, setting the Selected property to true for one element automatically removes other elements from the selection. Note that changing the value of the CurrentCell property does not alter the current selection. You can retrieve a collection of the currently selected cells, rows, or columns through the SelectedCellsSelectedRowsand SelectedColumns properties of the DataGridView control.
Accessing these properties is inefficient when every cell in the control is selected. To avoid a performance penalty in this case, use the AreAllCellsSelected method first. Additionally, accessing these collections to determine the number of selected cells, rows, or columns can be inefficient. Example code that demonstrates the programmatic use of selected cells can be found in the DataGridView class overview.
How to: Get and Set the Current Cell in the Windows Forms DataGridView Control
Skip to main content. Exit focus mode. Row and column headers cannot be used for selection. ColumnHeaderSelect Clicking a cell selects it. Clicking a column header selects the entire column.
Column headers cannot be used for sorting. FullColumnSelect Clicking a cell or a column header selects the entire column. FullRowSelect Clicking a cell or a row header selects the entire row.
RowHeaderSelect Default selection mode. Clicking a cell selects it. Clicking a row header selects the entire row. Note Changing the selection mode at run time automatically clears the current selection. Tip Example code that demonstrates the programmatic use of selected cells can be found in the DataGridView class overview. Is this page helpful?Last post Jun 21, AM by article. Shouldn't the highligh be only on the seleted row?
Mar 18, AM MetalAsp. Something like:. You can actually use this in the SelectedIndexChanged of the gridview so it fires when the selected row changes. How come it works for you? The comment out portion is Kammie's method I think.
I'm not sure why they are all green color when I pasted here, but you get the idea. I'm going to try mudassarkhan's method next to see if it would work for me. Tthe final code is below in case someone has the same question. The code in green are two ways to have it hilight it in yellow.
This happens to me a few times now, i'm going to report to ASP site. Not sure anybody else has the same problem as I do. And loop and recolor the old rows with the new row and add the new row to arraylist and save it back to session. Rather than looping.
ToString ]! FromName Session[gvMainData. ToString ]. Thats it. No loops. Anytime I can avoid a loop, I think we have better system usage. I will have to look at that since I have never used paging I am not sure how the indexing is used with paging.I would like to know if there is any way that I could disable a datagridview row and make it unselectable.
I need to do this because I have clients in the grid of which some are active while others have been disabled but i am still displaying all. Only the active clients should be selectable. You may have to manually prevent them from selecting that row by trapping the row in the Select event. Then setting the CurrentCell to the next selectable row.
This could get messy because they could use the keyboard or the mouse. Another option maybe to just set all of the cells for the invalid row s to ReadOnly before you give them control of the grid.
If you do that, even if they select the row, they can not do anything with it. In any case, you should use the CellFormating event handler to indicate this is not a selectable cell.
You can even set the colors to give them the illusion that it is not selectable:. If you want to go the messy way and this is just a startGive youself a key var to track with, format the cell to make them think they can not select it, and monitor mouse and key strokes. Finally move the selection when they attempt to select a row you do not want them to. Thanks Jerry for your suggestions you've really help me get something to work on here.
I have since decided to take the option of just making the Disabled client rows to read-only and just coloring them. The second option I also think could work but let me just try the first option. Hi guys, I would like to know if there is any way that I could disable a datagridview row and make it unselectable. Thanks Azo. Set value false to Enabled property of datagrid. Setting the Enable property of the grid will prevent the user from moving to any subsquent rows.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I want my DataGridView to highlight row headers for any rows that have selected cells. Any way to do that? Standard behavior seems to be only to highlight the row header if the entire row of cells is selected.
I've looked at the decompiled source for DataGridView and from what i can tell which definitely may be wrong it highlights the header based upon whether the DataGridViewRow is selected. I can't figure out how to set the row selected without the whole row actually being selected. The way I've done this before is to handle the CellStateChanged event, check the cells in the effected cell's row, and set the row header accordingly.
You'll need to set the following snippit to enable these changes, as explained here :. Not shown: also consider coloring the header cell for Row when everything is initialized. Learn more. Asked 3 years, 1 month ago.
How can i highlight row in datagridview with c#?
Active 3 years, 1 month ago. Viewed times. What I've tried: I've looked at the decompiled source for DataGridView and from what i can tell which definitely may be wrong it highlights the header based upon whether the DataGridViewRow is selected. CoderBrien CoderBrien 1 1 gold badge 4 4 silver badges 18 18 bronze badges.
What have you tried? Have you looked at having an event handler for the CellClick or the SelectionChanged events that highlights the relevant headers? Active Oldest Votes. SelectionBackColor : this. And, it's sweet! The only thing I did during initialization which I did in Form.
I wasn't able to reproduce the behavior you described, so I'm glad you worked it out. Sign up or log in Sign up using Google.Someone recently asked me how to change the style of the row under the mouse in a DataGridView control.
This example does that. When the program starts, the following code prepares the DataGridView for use. The HighlightStyle variable will hold the style used to highlight the row under the mouse.
The program stores the index of the currently highlighted row in the variable HighlightedRowIndex. If the cell is in the currently highlighted row, the correct row is already highlighted so the event handler does nothing else. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. C Helper. Skip to content.
Red; HighlightStyle. Yellow; HighlightStyle. Font, FontStyle. The last piece of code executes when the mouse leaves a cell. This entry was posted in controlsuser interface and tagged CC programmingcontrolsDataGridViewDataGridView styleexampleexample programhighlighthighlight rowrow styleuser interfaceWindows Forms programming.
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Highlight Gridview selected row in ASP. He has explained with an example and attached sample code, when the Select Command Button is clicked, the Background color of the Selected Row is changed thus making it look Highlighted.
Net GridView programmatically. You can also read some other interesting articles on GridView HTML Markup. You will need to import the following namespaces.
Imports System. Binding the GridView. The GridView is populated using some dummy records using DataTable. Add 1, "John Hammond""United States". Add 2, "Mudassar Khan""India". Add 3, "Suzanne Mathews""France". Add 4, "Robert Schidner""Russia". DataBind. If Not Me. IsPostBack Then. Dim dt As New DataTable. Add 1, "John Hammond""United States". Add 2, "Mudassar Khan""India".
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However I would like the cell that currently has focus to be highlighted with a different back color so the user can clearly see what cell they are about to edit. How can I do this I do not want to change the SelectionMode? For me CellFormatting does the Trick. I have a set of columns that one can Edit that I made to appear in a different color and this is the code I used:.
Let the framework draw the row, and afterwards go back and color in the cell you're interested in.
An example is here at MSDN. Learn more. Asked 11 years, 6 months ago. Active 1 year, 4 months ago. Viewed 11k times.
Ricardo Altamirano Phillip Wells Phillip Wells 6, 6 6 gold badges 36 36 silver badges 40 40 bronze badges. Alternate option I coded where the focus rectangle will always be displayed on the CurrentCell.
It's not a different BackColorbut has the same effect. Active Oldest Votes. CellFormatting If uxContacts. RowIndex And e. ColumnIndex Then e. SteelBlue Else e. CellFormatting If dgvUtil. ColumnIndex And dgvUtil. Jimi Dennys Henry Dennys Henry 76 9 9 bronze badges. This is just a copy of the 7-year prior accepted answer. Instead of re-posting, you should upvote the accepted answer when you have enough rep.
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