Colouring Excel cell with condition using DocumentFormat.OpenXml - spreadsheet

Question

I would like to know if someone have worked on DocumentFormat.OpenXml as I have an issue with the colouring of sheet cell on condition using DocumentFormat.Spreadsheet.
Now I can create the colour for the 1st time but I need to open the same excel sheet and based on the condition I need to colour a particular cell. E.g. if cell D1 is yellow then D2 may be green or yellow.
e.g.
Name IpAddress Region Details
Switch 10.1.1.1 EMEA Based on Condition the cell would be coloured 
Switch 10.1.1.2 AMER Based on Condition the cell would be coloured 
Switch 10.1.1.3 APAC Based on Condition the cell would be coloured 
Switch 10.1.1.2 AMER Based on Condition the cell would be coloured 
Switch 10.1.1.2 AMER Based on Condition the cell would be coloured 
I’m writing each row at a time and when I want to open existing excel sheet I would pass the value i.e. _valuecolour and based its value it would colour the particular cell along with the alignment of the other cells.
I have used the code below.
public static bool InsertRowExcel(string filepath, string _sb, string _switchinput)
{
int i = 0;
string[] _arr = _switchinput.Split(',');
bool bl = false;
int k = 0;
try
{
using (SpreadsheetDocument myDoc = SpreadsheetDocument.Open(filepath, true))
{
//Get workbookpart
WorkbookPart workbookPart = myDoc.WorkbookPart;
WorkbookStylesPart stylePart = workbookPart.WorkbookStylesPart;
Row row = new Row();
//then access to the worksheet part
IEnumerable<WorksheetPart> worksheetPart = workbookPart.WorksheetParts;
foreach (WorksheetPart WSP in worksheetPart)
{
//find sheet data
IEnumerable<SheetData> sheetData = WSP.Worksheet.Elements<SheetData>();
// Iterate through every sheet inside Excel sheet
foreach (SheetData SD in sheetData)
{
IEnumerable<Row> rows = SD.Elements<Row>(); // Get the row IEnumerator
i = (rows.Count()); // Will give you the count of rows
do
{ row = new Row();
row.Append(
ConstructCell(_arr[0], CellValues.String),
ConstructCell(_arr[1], CellValues.String),
ConstructCell(_arr[2], CellValues.String),
ConstructCell(_sb, CellValues.String,2U)
);
}
while (k > 0);
/* HERE I NEED TO ADD STYLE TO THE CELL. */
}
}
bl = true;
}
}
catch (Exception ex)
{
bl = false;
throw ex;
}
return bl;
}
private static Stylesheet GenerateStylesheet(bool _valuecolour)
{
Stylesheet styleSheet = null;
Fills fills = new Fills();
if (_valuecolour)
{
fills = new Fills(
new Fill(new PatternFill() { PatternType = PatternValues.None }), // Index 0 - default
new Fill(new PatternFill() { PatternType = PatternValues.Gray125 }), // Index 1 - default
new Fill(new PatternFill(new ForegroundColor { Rgb = new HexBinaryValue() { Value = "FFFFFF00" } })
{ PatternType = PatternValues.Solid })
);
}
else
{
fills = new Fills(
new Fill(new PatternFill() { PatternType = PatternValues.None }), // Index 0 - default
new Fill(new PatternFill() { PatternType = PatternValues.Gray125 }), // Index 1 - default
new Fill(new PatternFill(new ForegroundColor { Rgb = new HexBinaryValue() { Value = "008000" } })
{ PatternType = PatternValues.Solid }) // Index 2 - body
);
}
CellFormats cellFormats = new CellFormats(
new CellFormat(), // default
new CellFormat(new Alignment() { Horizontal = HorizontalAlignmentValues.Left, Vertical = VerticalAlignmentValues.Top, WrapText = true })
{ FontId = 0, FillId = 0, BorderId = 1, ApplyAlignment = true },
new CellFormat(new Alignment() { Horizontal = HorizontalAlignmentValues.Left, Vertical = VerticalAlignmentValues.Top, WrapText = true }){ FontId = 1, FillId = 2, BorderId = 1, ApplyFill = true }); // header
styleSheet = new Stylesheet(fills, cellFormats);
return styleSheet;
}
private static Cell ConstructCell(string value, CellValues dataType,uint styleIndex = 0)
{
return new Cell()
{
CellValue = new CellValue(value),
DataType = new EnumValue<CellValues>(dataType),
StyleIndex = styleIndex
};
}

Answer 1

Here is the code which works as expected
enter code here
#region ReadWriteExcel File
public static bool ReadWriteExcel(string _sb, string _switchinput, bool _checkinitial)
{
string _str = string.Empty;
bool _checkStatus = false;
bool bl = false;
String[] _arr;
_arr = _switchinput.Split(',');
int i = 0;
string filepath = _directoryPath + DateTime.Now.ToString("dd.MM.yyyy") + ".xlsx";
bl = (File.Exists(filepath) ? true : false);
if (bl) // && _checkinitial
{
//_sb = string.Empty;
//LogWrite("Just Before InsertRowExcel " + _switchinput);
_checkStatus = InsertRowExcel(filepath, _sb.ToString(), _switchinput);
}
else
{
using (SpreadsheetDocument document = SpreadsheetDocument.Create(filepath, SpreadsheetDocumentType.Workbook))
{
try
{
WorkbookPart workbookPart = document.AddWorkbookPart();
workbookPart.Workbook = new Workbook();
WorksheetPart worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
WorkbookStylesPart stylePart = workbookPart.AddNewPart<WorkbookStylesPart>();
worksheetPart.Worksheet = new Worksheet();
Sheets sheets = workbookPart.Workbook.AppendChild(new Sheets());
Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "SAN Switch Health Check" };
sheets.Append(sheet);
stylePart.Stylesheet = GenerateStylesheetDefault();
stylePart.Stylesheet.Save();
workbookPart.Workbook.Save();
SheetData sheetData = worksheetPart.Worksheet.AppendChild(new SheetData());
// Constructing header
Row row = new Row();
row.Append(
ConstructCell("Device_type", CellValues.String),
ConstructCell("Name", CellValues.String),
ConstructCell("IP Address", CellValues.String),
ConstructCell("Status", CellValues.String)
);
// Insert the header row to the Sheet Data
sheetData.AppendChild(row);
do
{
//for (int i = 0; i < _arr.Length - 1; i++)
//{
row = new Row();
row.Append(
ConstructCell(_arr[0], CellValues.String, 1U),
ConstructCell(_arr[1], CellValues.String, 1U),
ConstructCell(_arr[2], CellValues.String, 1U));//,
//ConstructCell(_sb, CellValues.String,2U));
//sheetData.AppendChild(row);
}
while (i > 0);
if (_sb != "Normal")
{
row.Append(
ConstructCell(_sb, CellValues.String, 2U));
}
else
{
row.Append(
ConstructCell(_sb, CellValues.String, 3U));
}
sheetData.AppendChild(row);
//stylePart.Stylesheet.Save();
worksheetPart.Worksheet.Save();
_checkStatus = true;
}
catch (Exception ex)
{
_checkStatus = false;
//LogWrite(ex.StackTrace.ToString());
throw ex;
}
document.Close();
document.Dispose();
}
}
return _checkStatus;
}
private static Cell ConstructCell(string value, CellValues dataType, uint styleIndex = 0)
{
return new Cell()
{
CellValue = new CellValue(value),
DataType = new EnumValue<CellValues>(dataType),
StyleIndex = styleIndex
};
}
public static bool InsertRowExcel(string filepath, string _sb, string _switchinput)
{
// LogWrite("InsertRowExcel " + _switchinput);
int i = 0; int k = 0; bool bl = false; string[] _arr = _switchinput.Split(',');
using (SpreadsheetDocument myDoc = SpreadsheetDocument.Open(filepath, true))
{
//Get workbookpart
WorkbookPart workbookPart = myDoc.WorkbookPart;
WorkbookStylesPart stylePart = workbookPart.WorkbookStylesPart;
Row row = new Row();
stylePart.Stylesheet = GenerateStylesheetDefault();
stylePart.Stylesheet.Save();
//then access to the worksheet part
IEnumerable<WorksheetPart> worksheetPart = workbookPart.WorksheetParts;
foreach (WorksheetPart WSP in worksheetPart)
{//find sheet data
SheetData sheetData = WSP.Worksheet.Elements<SheetData>().First();
IEnumerable<Row> rows = sheetData.Elements<Row>(); // Get the row IEnumerator
i = (rows.Count()); // Will give you the count of rows
/* HERE I NEED TO ADD STYLE TO THE CELL on condition. */
do
{
row = new Row();
row.Append(
ConstructCell(_arr[0], CellValues.String),
ConstructCell(_arr[1], CellValues.String),
ConstructCell(_arr[2], CellValues.String)
);
if (_sb != "Normal")
{
row.Append(
ConstructCell(_sb, CellValues.String, 2U));
}
else
{
row.Append(
ConstructCell(_sb, CellValues.String, 3U));
}
sheetData.Append(row);
} while (k > 0);
}
bl = true;
myDoc.Close();
myDoc.Dispose();
}
return bl;
}
public static Stylesheet GenerateStylesheetDefault()
{
Stylesheet stylesheet1 = new Stylesheet();
Fonts fonts = new Fonts(
new Font(
new FontSize() { Val = 11D },
new Color() { Theme = (UInt32Value)1U },
new FontName() { Val = "Calibri" },
new FontFamilyNumbering() { Val = 2 },
new FontScheme() { Val = FontSchemeValues.Minor }
)
);
Borders borders = new Borders(
new Border(
new LeftBorder(),
new RightBorder(),
new TopBorder(),
new BottomBorder(),
new DiagonalBorder())
);
Fills fills = new Fills();
fills = new Fills(
new Fill(
new PatternFill() { PatternType = PatternValues.None }), //0
new Fill(
new PatternFill() { PatternType = PatternValues.Gray125 }),//1
new Fill(
new PatternFill(
new ForegroundColor { Rgb = new HexBinaryValue() { Value = "FFFFFF00" } }) //2 -yellow
{ PatternType = PatternValues.Solid }),
new Fill(
new PatternFill(
new ForegroundColor { Rgb = new HexBinaryValue() { Value = "FF008000" } })// 3 -green
{ PatternType = PatternValues.Solid })
);
CellStyleFormats cellStyleFormats = new CellStyleFormats(
new CellFormat() { NumberFormatId = (UInt32Value)0U, FontId = (UInt32Value)0U, FillId = (UInt32Value)0U, BorderId = (UInt32Value)0U }
);
CellFormats cellFormats = new CellFormats(
new CellFormat() { NumberFormatId = (UInt32Value)0U, FontId = (UInt32Value)0U, FillId = (UInt32Value)0U, BorderId = (UInt32Value)0U, FormatId = (UInt32Value)0U },
new CellFormat(
new Alignment() { Horizontal = HorizontalAlignmentValues.Left, Vertical = VerticalAlignmentValues.Top, WrapText = true })
{ FontId = 0, FillId = 0, BorderId = 0, ApplyAlignment = true },
new CellFormat(
new Alignment() { Horizontal = HorizontalAlignmentValues.Left, Vertical = VerticalAlignmentValues.Top, WrapText = true })
{ FontId = 0, FillId = 2, BorderId = 0, ApplyFill = true },
new CellFormat(
new Alignment() { Horizontal = HorizontalAlignmentValues.Left, Vertical = VerticalAlignmentValues.Top, WrapText = true })
{ FontId = 0, FillId = 3, BorderId = 0, ApplyFill = true }
);
stylesheet1.Append(fonts);
stylesheet1.Append(fills);
stylesheet1.Append(borders);
stylesheet1.Append(cellStyleFormats);
stylesheet1.Append(cellFormats);
return stylesheet1;
}
#endregion