Borders can be set by programming, by calling APIs worksheet directly, also can be set by performing actions.

Border Styles

The following border styles are supported by current version of ReoGrid.


Border styles are defined as BorderLineStyle enumeration.

Border Positions

Borders must be set around a range, even the range contains only one cell. To specify border positions, use BorderPositions enumeration and its binary combined value.


Set borders

To set borders, use SetRangeBorders method:

var sheet = reoGridControl.CurrentWorksheet;

sheet.SetRangeBorders("B3:D7", BorderPositions.Outside,
  new RangeBorderStyle
    Color = Graphics.SolidColor.Magenta,
    Style = BorderLineStyle.BoldSolid,


Set borders by performing action

Setting borders by actions can be undone. For example, to set all dashed borders inside a range:

  new SetRangeBorderAction(new RangePosition(2, 1, 5, 3), 
    new RangeBorderStyle { 
      Color = Graphics.SolidColor.Red, 
      Style = BorderLineStyle.Dashed 


Get borders

To get borders from a range, use GetRangeBorders method of worksheet.

RangeBorderInfoSet borderInfoSet = sheet.GetRangeBorders("A1:D5");

The method GetRangeBorders filters all same borders and returns only one style instance. Check the property NonUniformPos to see what positions of border in the range are not same.

Iterate Borders

To iterate over all borders in a specified range. use IterateBorders method of worksheet.


IterateBorders(RowOrColumn direction, RangePosition range, Func<int, int, int, RangeBorderStyle, bool> iterator);


  • direction determines the iterating mode:
    • RowOrColumn.Row – iterates over all horizontal borders
    • RowOrColumn.Column – iterates over all vertical borders
    • RowOrColumn.Both – iterates over all borders (both Row and Column)
  • range is the target range to be iterated
  • iterator is a callback function that is provided by user code to scan all borders returned from worksheet, which has following arguments:
    • int Row – the number of row where border exists
    • int Column – the number of column where border exists
    • int Span – how many borders exist with same styles from this position
    • RangeBorderStyle Border information – contains the color and style information of border
    • bool return value – return true to continue iterating; return false to abort

For example, iterate over all horizontal borders and markup cells as red background if the position of the cell has borders.

// set borders
worksheet.Ranges["C3:F10"].BorderInsideHorizontal = RangeBorderStyle.BlackSolid;

// iterate borders
worksheet.IterateBorders(RowOrColumn.Row, RangePosition.EntireRange, (r, c, span, border) =>
  worksheet.Cells[r, c].Style.BackColor = Color.LightCoral;
  return true;



Iterate over all vertical borders:

// set borders
worksheet.Ranges["C3:F10"].BorderInsideVertical = RangeBorderStyle.BlackSolid;

// iterate borders
worksheet.IterateBorders(RowOrColumn.Column, RangePosition.EntireRange, (r, c, span, border) =>
  worksheet.Cells[r, c].Style.BackColor = Color.LightCoral;
  return true;



Iterate over all borders, both Row and Column borders:

// set borders
worksheet.Ranges["C3:F10"].BorderOutside = RangeBorderStyle.BlackBoldSolid;
worksheet.Ranges["C3:F10"].BorderInsideHorizontal = RangeBorderStyle.BlackSolid;
worksheet.Ranges["C3:F10"].BorderInsideVertical = RangeBorderStyle.BlackDotted;

// iterate borders
worksheet.IterateBorders(RowOrColumn.Both, RangePosition.EntireRange, (r, c, span, border) =>
  worksheet.Cells[r, c].Style.BackColor = Color.LightCoral;
  return true;



See also: Iterate Cells

Remove borders

To remove borders from worksheet, use RemoveRangeBorders method.

sheet.RemoveRangeBorders(new RangePosition(2, 1, 5, 1), ReoGridBorderPos.All);

Setting border’s style to RangeBorderStyle.Empty is also possible to remove borders:

sheet.SetRangeBorders(2, 1, 5, 3, ReoGridBorderPos.All, RangeBorderStyle.Empty);

Remove borders by doing action

Removing borders by action can be undone, for example:

  new RemoveRangeBorderAction(new RangePosition(2, 1, 5, 1), ReoGridBorderPos.All));

To undo this removing operation:


Excel support

ReoGrid support reading and saving all borders with styles from or to Excel file.

Demo project

Example code about using borders is available in demo project.

Next: Style

11 Responses to “Border”

  1. How do I iterate over all the RangeBorders in a given Worksheet?



    • Jing says:

      Currently there is no method that can iterate over all borders from a range. Iterating over all borders in a worksheet will be very slow, instead please consider to use GetRangeBorders method of worksheet.

      The GetRangeBorders method returns an object that has been filtered out from same borders in a range, for example, if all rows have same bottom-border styles, the return value of GetRangeBorders contains only one bottom-border style, otherwise the property NonUniformPos with value BorderPositions.Bottom indicates that bottom-border styles are not uniform.

      So there might be a complex logic to get all borders from worksheet but it is more efficient. Please refer to source code in Editor\PropertyPages\BorderPage.cs for more example about getting borders. Do you want to check all borders one by one in a worksheet?

      Edit 1: We consider to add a method like IterateBorders from next version. The method skips borders with same styles by returning a span value. We see this method will bring performance problem but it should not be too bad.

      Edit 2: IterateBorders is supported from version.

      • Thanks. Let me work through your description and the logic of it in my head.
        Basically, what I am trying to do is store the worksheet configuration in tables in a database. I’m currently iterating through the cells which gives me contents, style and merged ranges. If I can store the border settings then that’s most of it.

  2. QUick question: What do the fields in the callback function from IterateBorders mean?