am new to Dapfor .Net Grid. How can I do headers with grid.

maplecurie:
Am new to Dapfor .Net Grid. I want to edit data without graphical controls. Can anyone tell me how I can go about it.

I use dapfor .Net Grid. The following code should be of help.


public class RatingEditor : UITypeEditorEx
{
public override bool GetPaintCellSupported()
{
//The cell should be repainted in the editor
return true;
}

public override void PaintCell(PaintCellEventArgs e)
{
//Do basic painting without text
e.Text = string.Empty;
e.PaintAll();
e.Handled = true;

//Draw the stars over the cell
Rectangle bounds = e.Cell.VirtualBounds;
bounds.Width = Resources.star_grey.Width;
for (int i = 0; i < 5; i++)
{
//Select image
if (e.Cell.Value != null && e.Cell.Value is int)
{
int curRating = (int) e.Cell.Value;
Image image = i >= curRating ? Resources.star_grey : Resources.star_yellow;
e.Graphics.DrawImage(image, bounds);
bounds.X += bounds.Width;
}
}
}

public override StopEditReason EditCell(IGridEditorService service, Cell cell, StartEditReason reason)
{
//Edit the cell if the user has clicked on the cell with the left button
if (cell.Row != null && Equals(StartEditReason.LButtonClick, reason))
{
Point pt = cell.Row.Grid.PointToClient(Cursor.Position);
Rectangle bounds = cell.VirtualBounds;

int imageWidth = Resources.star_grey.Width;
if (bounds.Contains(pt) && imageWidth > 0)
{
//Set a new rating to the data object
cell.Value = ((pt.X - bounds.X)/imageWidth) + 1;
cell.Invalidate();
}
}

return StopEditReason.UserStop;
}
}

maplecurie:
Hello, can someone tell me how i can edit data in cells. I am using .Net grid. thanks

a good question. Dapfor NetGrid expands its features with UITypeEditorEx class. This class has an enhanced set of methods that can be used to create an arbitrary control directly over data cell and to use it for editing.
the code below should be of help.



//This editor creates a clickable button inside the cell
class MyEditor : UITypeEditorEx
{
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.None;
}

public override StopEditReason EditCell(IGridEditorService service, Cell cell, StartEditReason reason)
{
using(Button button = new Button())
{
//Add a reaction on user click
button.Click += delegate
{
//Close control with some reason
service.CloseCellControl(StopEditReason.UserStop);

//Set a new value if needed
cell.Value = _newvalue_;
};

//Start editing in cell
return service.CellEditControl(button, cell.VirtualBounds, reason);
}
}
}