将DataSet导入到Excel的多个Sheet中
参考MSDN文章：
如何：使用 COM Interop 创建 Excel 电子表格（C# 编程指南）
如何： 使用 Visual C#.net Excel 的句柄的事件
代码：
private bool WriteToExcel(string filePath, DataSet ds)
{
Excel.Application oXL;
Excel._Workbook oWB;
Excel._Worksheet oSheet;
Excel.Range oRng;
object oMissing = System.Reflection.Missing.Value;
//Start Excel and get Application object.
oXL = new Excel.Application();
oXL.Visible = false;
try
{
//Get a new workbook.
oWB = (Excel._Workbook)(oXL.Workbooks.Open(filePath, oMissing, oMissing, oMissing, oMissing,
oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing));
oXL.DisplayAlerts = false;
for (int i = 0; i < ds.Tables.Count; i++)
{
oSheet = (Excel.Worksheet)oWB.Worksheets.Add(oMissing, oMissing, 1, oMissing);
oSheet.Name = ds[i].TableName.Trim();
int rowIndex = 1;
int colIndex = 0;
for (int j = 0; j < ds.Tables[i].Columns.Count; j++)
{
//Add table headers going cell by cell.
oSheet.Cells[1, j + 1] = ds.Tables[i].Columns[j].ColumnName.Trim();
colIndex++;
}
string maxHeaderCell = NumberToChar(colIndex) + "1";
//Format A1:D1 as bold, vertical alignment = center.
oSheet.get_Range("A1", maxHeaderCell).Font.Bold = true;
oSheet.get_Range("A1", maxHeaderCell).VerticalAlignment = Excel.XlVAlign.xlVAlignCenter;
// Create an array to multiple values at once.
string[,] saNames = new string[ds.Tables[i].Rows.Count, ds.Tables[i].Columns.Count];
for (int n = 0; n < ds.Tables[i].Rows.Count; n++)
{
for (int m = 0; m < ds.Tables[i].Columns.Count; m++)
{
saNames[n, m] = ds.Tables[i].Rows[n][ds.Tables[i].Columns[m].ColumnName.Trim()].ToString();
}
rowIndex++;
}
oSheet.get_Range("A2", NumberToChar(colIndex) + rowIndex.ToString()).Value2 = saNames;
oRng = oSheet.get_Range("A1", maxHeaderCell);
oRng.EntireColumn.AutoFit();
}
// 保存并关闭这个工作簿
oWB.Close(Excel.XlSaveAction.xlSaveChanges, oMissing, oMissing);
System.Runtime.InteropServices.Marshal.ReleaseComObject(oWB);
//Make sure Excel is visible and give the user control
//of Microsoft Excel's lifetime.
//oXL.Visible = true;
//oXL.UserControl = true;
return true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return false;
}
finally
{
oXL.Quit(); //釋放Excel資源
System.Runtime.InteropServices.Marshal.ReleaseComObject(oXL);
oWB = null;
oSheet = null;
oRng = null;
oXL = null;
GC.Collect();
}
}
private string NumberToChar(int number)
{
if (1 <= number && 26 >= number)
{
int num = number + 64;
System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding();
byte[] btNumber = new byte[] { (byte)num };
return asciiEncoding.GetString(btNumber);
}
else if (number > 26)
{
int NewNum = number % 26;
int count = number / 26;
string ss = NumberToChar(count);
int num = NewNum + 64;
System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding();
byte[] btNumber = new byte[] { (byte)num };
return ss + asciiEncoding.GetString(btNumber);
}
return "数字不在转换范围内";
}