datagridview

Does the Windows Forms DataGridView implement a true virtual mode?

I have a SQL table containing currently 1 million rows that will grow over time. There is a specific user requirement to present a sortable grid that displays all rows without paging. The user expects to be able to very quickly jump from row to row and top to bottom by using the scrollbar. I am familiar with "virtual mode" grids that...

.Net Reorder DataGridView Columns at runtime

Hi, Is there a simple way to re-ordering the columns of a DataGridView that are bound to a DataSet at runtime? I can do it simply via the DataGridView "Edit Columns" dialog at design time but have to remember to do this every time make changes to the form (remove or add the DataGridView to the form). Thanks ...

C# Beginner: I have a Northwind Access database and I need to build some objects. How do I do it?

I need to build two objects: an OrderList and an Order. Using those two objects, I have to populate a datagridview with a history of the orders. However, I am instructed not to use binding sources for the connection or other drag and drop controls. Unfortunately, from Google it seems like those are the most popular options for this type...

C# Databinding SelectedIndexChanged call

I am using a SelectedIndexChanged function for a combobox to update the content of my DataGridview item. I have the combobox data bound to keep track of it's currently selected record. However, when I changed the combobox index it updates the datagridview as if the selected value was the same. This means once I have selected a different ...

Background of cell in a DataGridView

I've been playing around with datagridviews for a bit and a question has came up. -> Doesn't changing a cells background work out of the CellFormatting event. I've tried this: private void dataGridView1_CellFormatting(object sender, dataGridViewCellFormattingEventArgs e) { if (dataGridView1.Columns[e.ColumnIndex].Name.Equals(dnsList...

DataGridView: How can I make the enter key add a new line instead of changing the current cell?

How can I make the Enter key behave in a Winforms DataGridViewTextBoxCell like it does in a normal Winforms TextBox (add a new line to the text, instead of changing the current cell)? ...

DisplayIndex for DataGridViewRow?

seems like this would be a common question, but searching yielded nothing...the DataGridViewColumn has a DisplayIndex property indicating it's index as displayed on screen (vs the Index property which related - I think - to the order it was added to the grid). Is there a similar concept for rows? I want to iterate through the rows as the...

DataGridView row is still dirty after committing changes

DataGridView.IsCurrentRowDirty remains true after I commit changes to the database. I want to set it to false so it doesn't trigger RowValidating when it loses focus. I have a DataGridView bound to a BindingList<T>. I handle the CellEndEdit event and save changes to the database. After saving those changes I would like DataGridView.I...

C#, Bound DataGridViewCheckBoxColumn not updating binding source

I have DataGridView bind to bindingsource with datasource as list of active record models: BindingSource bs = new BindingSource(); bs.DataSource = _user.Addresses; Address has bool property named Actual, and my DataGirdView has CheckBoxColumn: DataGridViewCheckBoxColumn c = new DataGridViewCheckBoxColumn(false); c.Nam...

datagrid view store column id value

hello sir Is possiple to store two values store in same column in datagrid view column, ie datagridview.item(0,1).value ="somu" somu id value is =1 i want to store this id(1) to same column id any idea to this value to store in grid? please help me. ...

Change the cell border width and also make the cell border only all,left ,right,top,bottom or none

Change the cell border width and also make the cell border only all,left ,right,top,bottom or none in winform datagridview. In datagridview the problem is to change the border style of each cell , as we could do in excel sheet. I have tried following but it didnt work. DataGridViewAdvancedBorderStyle mystyle = new DataGridViewAdvancedBo...

Howto merge DataTable without copies?

Hello I Have two databases generated from the same SQL code and two datasets created from this databases. I want to create one dataset from this two datasets, and i thought i could do this like this: public void MergeGatunek() { DB1.DataSetGatunek.Tables[0].Merge(DB2.DataSetGatunek.Tables[0], true); DataSetGatune...

Update datagrid view with updated data

Hello, I've a datagridview. I read an xml file and bind the data to the gridview. I change the xml and save it in another form. So i reread the xml file and i bind it to the gridview. The datatable is getting the updated values. But the grid is not getting updated till i close and open the application again. How to do it? Thank you. R...

Button click event not firing from custom DataGridViewCell

I've created custom column(DataGridViewButtonControlColumn) and cell(ButtonControlCell) classes to hold System.Windows.Forms.Button controls. The buttons get added to the columns and get displayed properly. Before I set the button as the value of a ButtonControlCell, I attach an event handler for "Click". But this handler is not called w...

Data grid view header Grid color

This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005. We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below: We've tried looking through all of the properties of the DataGridView contr...

How to Add a new row to a DATAGRIDVIEW in ASP.NET

How to Add a new row to a DATAGRIDVIEW in ASP.NET....using c# Code ??? ...

Datagridview datacolumn will not updates (nested property)

Hi, It will be a stupid question, but a have a Datagridview and a data object in a collection. The datasource of de datagridview is set to this collection (type BindingList). All data will be displayed and some data in the datagrid will also updatet when I update a property. But only on the first level of the dataobject. Changing a sec...

keep track of object changes in datagridview using the entity framework

I'm using a DataGridView to display EntityObjects from the .NET Entity Framework. how could I change the formatting of a row of the DataGridView if the corresponding EntityObject has been altered by the user, e.g. displaying the row in bold greetings ...

how can I add a custom non-DataTable column to my DataView, in a winforms ADO.net application?

Hi, How could I (/is it possible) to add a custom column to my DataView, and in this column display the result of a specific calculation. That is, I currently have a dataGridView which has a binding to a DataView, based on the DataTable from my database. I'd like to add an additional column to the dataGridView to display a number whic...

Delete row in datagridview based on checkmark

Hi all, I have a column called "Delete" that is a checkmark column. When a user places a checkmark in that row, and clicks on the Delete button, the row should be deleted and the DB (SQL) updated. I use table adapters to make changes to the DB. The code is in C#. How would I do this? I'm new to datagrids... Thanks. ...