[英]How to Create Dropdownlist in Excel using Openxml in C#
有一些工作表是從 XML 文件創建的。
第二張表中有一些名稱 .excel 是通過讀取 XML 文件創建的,並將其更改為數據集,然后在 OPEN-XML 的幫助下創建工作表和所有其他行和列。
所以我想使用第二張表中的名稱創建一個列表,並將表 1 中的列表顯示為下拉列表。使用 OPEN-XML 我想創建一個下拉列表,其中包含從第二頁獲取的數據。 我瀏覽了很多次,但沒有找到任何解決方案 是否可以使用 openxml 創建下拉列表。
這是我從 xml 文件創建 excel 的全部代碼,所以如果它有解決方案,請幫助我。
public void ExportDSToExcel(DataSet ds, string dest)
{
try
{
using (var workbook = SpreadsheetDocument.Create(dest, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
{
var workbookPart = workbook.AddWorkbookPart();
workbook.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook();
workbook.WorkbookPart.Workbook.Sheets = new DocumentFormat.OpenXml.Spreadsheet.Sheets();
uint sheetId = 1;
foreach (DataTable table in ds.Tables)
{
var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>();
var sheetData = new DocumentFormat.OpenXml.Spreadsheet.SheetData();
sheetPart.Worksheet = new DocumentFormat.OpenXml.Spreadsheet.Worksheet(sheetData);
DocumentFormat.OpenXml.Spreadsheet.Sheets sheets = workbook.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>();
string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart);
if (sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Count() > 0)
{
sheetId =
sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Select(s => s.SheetId.Value).Max() + 1;
}
DocumentFormat.OpenXml.Spreadsheet.Sheet sheet = new DocumentFormat.OpenXml.Spreadsheet.Sheet()
{
Id = relationshipId, SheetId = sheetId, Name = table.TableName
};
sheets.Append(sheet);
if(sheet.Name=="Customer")
{
PageMargins pageM = sheetPart.Worksheet.GetFirstChild<PageMargins>();
SheetProtection sheetProtection = new SheetProtection();
sheetProtection.Password = "admin";
sheetProtection.Sheet = true;
sheetProtection.Objects = true;
sheetProtection.Scenarios = true;
ProtectedRanges pRanges = new ProtectedRanges();
ProtectedRange pRange = new ProtectedRange();
ListValue<StringValue> lValue = new ListValue<StringValue>();
lValue.InnerText = ""; //set cell which you want to make it editable
pRange.SequenceOfReferences = lValue;
pRange.Name = "not allow editing";
pRanges.Append(pRange);
sheetPart.Worksheet.InsertBefore(sheetProtection, pageM);
sheetPart.Worksheet.InsertBefore(pRanges, pageM);
if (cell.CellReference == "B4")
{
CellFormula cellformula = new CellFormula();
cellformula.Text = "=INDEX(Sheet5!B:B,MATCH(A4,Sheet5!B:B,0))";
CellValue cellValue = new CellValue();
cellValue.Text = "0";
cell.Append(cellformula);
cell.Append(cellValue);
}
}
DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
if (RadioButtonList1.SelectedItem.Text == "Yes")
{
PageMargins pageM = sheetPart.Worksheet.GetFirstChild<PageMargins>();
SheetProtection sheetProtection = new SheetProtection();
sheetProtection.Password = "admin";
sheetProtection.Sheet = true;
sheetProtection.Objects = true;
sheetProtection.Scenarios = true;
ProtectedRanges pRanges = new ProtectedRanges();
ProtectedRange pRange = new ProtectedRange();
ListValue<StringValue> lValue = new ListValue<StringValue>();
lValue.InnerText = ""; //set cell which you want to make it editable
pRange.SequenceOfReferences = lValue;
pRange.Name = "not allow editing";
pRanges.Append(pRange);
sheetPart.Worksheet.InsertBefore(sheetProtection, pageM);
sheetPart.Worksheet.InsertBefore(pRanges, pageM);
}
else
{
}
List<String> columns = new List<string>();
foreach (DataColumn column in table.Columns)
{
columns.Add(column.ColumnName);
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName);
headerRow.AppendChild(cell);
}
sheetData.AppendChild(headerRow);
foreach (DataRow dsrow in table.Rows)
{
DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
foreach (String col in columns)
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString()); //
newRow.AppendChild(cell);
}
sheetData.AppendChild(newRow);
}
}
}
}
catch
{
lblstatus.Text = "File Upload Not Succesfull ";
}
lblstatus.Text = "File Upload Succesfull ";
}
protected void Button1_Click(object sender, EventArgs e)
{
if(txtname.Text != null)
{
if (FileUpload1.HasFile == true)
{
string myXMLfile = "/uploads/" + FileUpload1.FileName;
FileUpload1.SaveAs(Server.MapPath(myXMLfile));
string dest = "D:/uploads/" + txtname.Text+".xlsx";
DataSet ds = new DataSet();
try
{
ds.ReadXml(Server.MapPath(myXMLfile));
}
catch (Exception ex)
{
lblstatus.Text=(ex.ToString());
}
ExportDSToExcel(ds, dest);
}
else
{
lblstatus.Text = "Please Upload the file ";
}
}
else {
lblstatus.Text = "Please enter the name ";
}
}
}
您需要創建一個驗證器
A1:A1048576 - 是應用此驗證器的單元格
public void CreateValidator(Worksheet ws, string dataContainingSheet)
{
/*** DATA VALIDATION CODE ***/
DataValidations dataValidations = new DataValidations();
DataValidation dataValidation = new DataValidation
{
Type = DataValidationValues.List,
AllowBlank = true,
SequenceOfReferences = new ListValue<StringValue> { InnerText = "A1:A1048576" }
};
dataValidation.Append(
//new Formula1 { Text = "\"FirstChoice,SecondChoice,ThirdChoice\"" }
new Formula1(string.Format("'{0}'!$A:$A", dataContainingSheet))
);
dataValidations.Append(dataValidation);
var wsp = ws.WorksheetPart;
wsp.Worksheet.AppendChild(dataValidations);
}
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