Radera text från en cell
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OpenXML Excel
string FilePath = @"..\..\..\..\Sample Files\";
string FileName = FilePath + "Delete text from a cell.xlsx";
string sheetName = "Sheet1";
string colName = "B";
uint rowIndex = 2;
DeleteTextFromCell(FileName, sheetName, colName, rowIndex);
// Given a document, a worksheet name, a column name, and a one-based row index,
// deletes the text from the cell at the specified column and row on the specified worksheet.
public static void DeleteTextFromCell(string docName, string sheetName, string colName, uint rowIndex)
{
// Open the document for editing.
using (SpreadsheetDocument document = SpreadsheetDocument.Open(docName, true))
{
IEnumerable<Sheet> sheets = document.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>().Where(s => s.Name == sheetName);
if (sheets.Count() == 0)
{
// The specified worksheet does not exist.
return;
}
string relationshipId = sheets.First().Id.Value;
WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(relationshipId);
// Get the cell at the specified column and row.
Cell cell = GetSpreadsheetCell(worksheetPart.Worksheet, colName, rowIndex);
if (cell == null)
{
// The specified cell does not exist.
return;
}
cell.Remove();
worksheetPart.Worksheet.Save();
}
}
// Given a worksheet, a column name, and a row index, gets the cell at the specified column and row.
private static Cell GetSpreadsheetCell(Worksheet worksheet, string columnName, uint rowIndex)
{
IEnumerable<Row> rows = worksheet.GetFirstChild<SheetData>().Elements<Row>().Where(r => r.RowIndex == rowIndex);
if (rows.Count() == 0)
{
// A cell does not exist at the specified row.
return null;
}
IEnumerable<Cell> cells = rows.First().Elements<Cell>().Where(c => string.Compare(c.CellReference.Value, columnName + rowIndex, true) == 0);
if (cells.Count() == 0)
{
// A cell does not exist at the specified column, in the specified row.
return null;
}
return cells.First();
}
// Given a shared string ID and a SpreadsheetDocument, verifies that other cells in the document no longer
// reference the specified SharedStringItem and removes the item.
private static void RemoveSharedStringItem(int shareStringId, SpreadsheetDocument document)
{
bool remove = true;
foreach (var part in document.WorkbookPart.GetPartsOfType<WorksheetPart>())
{
Worksheet worksheet = part.Worksheet;
foreach (var cell in worksheet.GetFirstChild<SheetData>().Descendants<Cell>())
{
// Verify if other cells in the document reference the item.
if (cell.DataType != null &&
cell.DataType.Value == CellValues.SharedString &&
cell.CellValue.Text == shareStringId.ToString())
{
// Other cells in the document still reference the item. Do not remove the item.
remove = false;
break;
}
}
if (!remove)
{
break;
}
}
// Other cells in the document do not reference the item. Remove the item.
if (remove)
{
SharedStringTablePart shareStringTablePart = document.WorkbookPart.SharedStringTablePart;
if (shareStringTablePart == null)
{
return;
}
SharedStringItem item = shareStringTablePart.SharedStringTable.Elements<SharedStringItem>().ElementAt(shareStringId);
if (item != null)
{
item.Remove();
// Refresh all the shared string references.
foreach (var part in document.WorkbookPart.GetPartsOfType<WorksheetPart>())
{
Worksheet worksheet = part.Worksheet;
foreach (var cell in worksheet.GetFirstChild<SheetData>().Descendants<Cell>())
{
if (cell.DataType != null &&
cell.DataType.Value == CellValues.SharedString)
{
int itemIndex = int.Parse(cell.CellValue.Text);
if (itemIndex > shareStringId)
{
cell.CellValue.Text = (itemIndex - 1).ToString();
}
}
}
worksheet.Save();
}
document.WorkbookPart.SharedStringTablePart.SharedStringTable.Save();
}
}
}
Aspose.Cells
string FilePath = @"..\..\..\..\Sample Files\";
string FileName = FilePath + "Delete text from a cell.xlsx";
string sheetName = "Sheet1";
string colName = "B";
uint rowIndex = 2;
DeleteTextFromCell(FileName, sheetName, colName, rowIndex);
private static void DeleteTextFromCell(string docName, string sheetName, string colName, uint rowIndex)
{
//Instantiating a Workbook object
Workbook workbook = new Workbook(docName);
//Obtaining the reference of the worksheet by passing its Name
Worksheet worksheet = workbook.Worksheets[sheetName];
//Removing value from cell
worksheet.Cells[colName + rowIndex].PutValue("");
//Saving the Excel file
workbook.Save(docName);
}