Asp.net 如何使用Excellibrary将数据集添加到工作表
我必须在一个文件中添加多个工作表。我找不到任何方法将数据集添加到工作表中,但我知道如何添加工作表。试试这个Asp.net 如何使用Excellibrary将数据集添加到工作表,asp.net,excellibrary,Asp.net,Excellibrary,我必须在一个文件中添加多个工作表。我找不到任何方法将数据集添加到工作表中,但我知道如何添加工作表。试试这个 using System; using System.Data; using System.IO; using ExcelLibrary.SpreadSheet; namespace ExcelLibrary { /// <summary> /// Provides simple way to convert Excel workbook into DataSet
using System;
using System.Data;
using System.IO;
using ExcelLibrary.SpreadSheet;
namespace ExcelLibrary
{
/// <summary>
/// Provides simple way to convert Excel workbook into DataSet
/// </summary>
public sealed class DataSetHelper
{
/// <summary>
/// Populate all data (all converted into String) in all worksheets
/// from a given Excel workbook.
/// </summary>
/// <param name="filePath">File path of the Excel workbook</param>
/// <returns>DataSet with all worksheet populate into DataTable</returns>
public static DataSet CreateDataSet(String filePath)
{
DataSet ds = new DataSet();
Workbook workbook = Workbook.Load(filePath);
foreach (Worksheet ws in workbook.Worksheets)
{
DataTable dt = PopulateDataTable(ws);
ds.Tables.Add(dt);
}
return ds;
}
/// <summary>
/// Populate data (all converted into String) from a given Excel
/// workbook and also work sheet name into a new instance of DataTable.
/// Returns null if given work sheet is not found.
/// </summary>
/// <param name="filePath">File path of the Excel workbook</param>
/// <param name="sheetName">Worksheet name in workbook</param>
/// <returns>DataTable with populate data</returns>
public static DataTable CreateDataTable(String filePath, String sheetName)
{
Workbook workbook = Workbook.Load(filePath);
foreach (Worksheet ws in workbook.Worksheets)
{
if (ws.Name.Equals(sheetName))
return PopulateDataTable(ws);
}
return null;
}
private static DataTable PopulateDataTable(Worksheet ws)
{
CellCollection Cells = ws.Cells;
// Creates DataTable from a Worksheet
// All values will be treated as Strings
DataTable dt = new DataTable(ws.Name);
// Extract columns
for (int i = 0; i <= Cells.LastColIndex; i++)
dt.Columns.Add(Cells[0, i].StringValue, typeof(String));
// Extract data
for (int currentRowIndex = 1; currentRowIndex <= Cells.LastRowIndex; currentRowIndex++)
{
DataRow dr = dt.NewRow();
for (int currentColumnIndex = 0; currentColumnIndex <= Cells.LastColIndex; currentColumnIndex++)
dr[currentColumnIndex] = Cells[currentRowIndex, currentColumnIndex].StringValue;
dt.Rows.Add(dr);
}
return dt;
}
/// <summary>
/// Populate all data from the given DataSet into a new Excel workbook
/// </summary>
/// <param name="filePath">File path to new Excel workbook to be created</param>
/// <param name="dataset">Source DataSet</param>
public static void CreateWorkbook(String filePath, DataSet dataset)
{
if (dataset.Tables.Count == 0)
throw new ArgumentException("DataSet needs to have at least one DataTable", "dataset");
Workbook workbook = new Workbook();
foreach (DataTable dt in dataset.Tables)
{
Worksheet worksheet = new Worksheet(dt.TableName);
for (int i = 0; i < dt.Columns.Count; i++)
{
// Add column header
worksheet.Cells[0, i] = new Cell(dt.Columns[i].ColumnName);
// Populate row data
for (int j = 0; j < dt.Rows.Count; j++)
worksheet.Cells[j + 1, i] = new Cell(dt.Rows[j][i]);
}
workbook.Worksheets.Add(worksheet);
}
workbook.Save(filePath);
}
}
}
有关更多详细信息,请参阅此帖子是否要将数据集添加到excel工作表中?请参阅我的更新答案,我添加了样式代码。您是否可以帮助如何为单元格提供backgound颜色…我尝试了工作表。单元格[0,I]。style=new CellStyle(){BackColor=System.Drawing.color.Red};但是我没有工作。谢谢。请把它标记为你的答案,然后投票支持bcz。你的主要问题已经解决了。对于更改颜色,我不知道,但我正在搜索它,当我找到它时,我会让你知道。@gillchetanpalsingh看到我更新的答案,我已经添加了样式代码。
HSSFCellStyle style1 = hssfworkbook.CreateCellStyle();
// cell background
style1.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.BLUE.index;
style1.FillPattern = HSSFCellStyle.SOLID_FOREGROUND;
// font color
HSSFFont font1 = hssfworkbook.CreateFont();
font1.Color = NPOI.HSSF.Util.HSSFColor.YELLOW.index;
style1.SetFont(font1);
cell.CellStyle = style1;