讓C# Excel導入導出 支撐分歧版本Office。本站提示廣大學習愛好者：（讓C# Excel導入導出 支撐分歧版本Office）文章只能為提供參考，不一定能成為您想要的結果。以下是讓C# Excel導入導出 支撐分歧版本Office正文
成績：比來在項目中碰到，分歧客戶機裝置分歧Office版本，在導出Excel時，產生毛病。
找不到Excel Com組件，毛病信息以下。
未能加載文件或法式集“Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c”或它的某一個依附項。體系找不到指定的文件。
處理辦法：
1.援用高版本的的Excel.dll組件，最新版本14.0.0 避免客戶裝置高版本如Office不克不及導出。
（DLL組件可以兼容低版本，不克不及兼容高版本）
2.右鍵DLL屬性，將援用的Excel.dll組件，嵌入互操作類型為True，特定版本=false .這一步異常症結。
嵌入互操作類型 改成True後，生成時能夠現有挪用Excel的代碼會報錯，援用Microsoft.CSharp 定名空間，可以處理此成績。
3.援用Excel 14.0.0 DLL組件辦法，vs2012 右鍵添加援用->法式集->擴大->Microsoft.Office.Interop.Excel
Excel.dll： http://xiazai.jb51.net/201608/yuanma/Excel(jb51.net).rar
其他辦法：
1.應用NPOI.DLL開源組件，可以不裝置Office軟件，停止讀寫Excel文件。
NPIO.dll： http://xiazai.jb51.net/201608/yuanma/NPOI(jb51.net).rar
挪用辦法以下：
導出代碼：
/// <summary>
/// DataTable導出到Excel的MemoryStream Export()
/// </summary>
/// <param name="dtSource">DataTable數據源</param>
/// <param name="strHeaderText">Excel表頭文本（例如：車輛列表）</param>
public static MemoryStream Export(DataTable dtSource, string strHeaderText)
{
HSSFWorkbook workbook = new HSSFWorkbook();
ISheet sheet = workbook.CreateSheet();
#region 右擊文件 屬性信息
{
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "NPOI";
workbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Author = "文件作者信息"; //填加xls文件作者信息
si.ApplicationName = "創立法式信息"; //填加xls文件創立法式信息
si.LastAuthor = "最初保留者信息"; //填加xls文件最初保留者信息
si.Comments = "作者信息"; //填加xls文件作者信息
si.Title = "題目信息"; //填加xls文件題目信息
si.Subject = "主題信息";//填加文件主題信息
si.CreateDateTime = System.DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion
ICellStyle dateStyle = workbook.CreateCellStyle();
IDataFormat format = workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
//獲得列寬
int[] arrColWidth = new int[dtSource.Columns.Count];
foreach (DataColumn item in dtSource.Columns)
{
arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
}
for (int i = 0; i < dtSource.Rows.Count; i++)
{
for (int j = 0; j < dtSource.Columns.Count; j++)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
}
}
int rowIndex = 0;
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表頭，填充列頭，款式
if (rowIndex == 65535 || rowIndex == 0)
{
if (rowIndex != 0)
{
sheet = workbook.CreateSheet();
}
#region 表頭及款式
{
IRow headerRow = sheet.CreateRow(0);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.CENTER;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1));
}
#endregion
#region 列頭及款式
{
IRow headerRow = sheet.CreateRow(1);
ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.CENTER;
IFont font = workbook.CreateFont();
font.FontHeightInPoints = 10;
font.Boldweight = 700;
headStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
headerRow.GetCell(column.Ordinal).CellStyle = headStyle;
//設置列寬
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
}
#endregion
rowIndex = 2;
}
#endregion
#region 填充內容
IRow dataRow = sheet.CreateRow(rowIndex);
foreach (DataColumn column in dtSource.Columns)
{
ICell newCell = dataRow.CreateCell(column.Ordinal);
string drValue = row[column].ToString();
switch (column.DataType.ToString())
{
case "System.String"://字符串類型
newCell.SetCellValue(drValue);
break;
case "System.DateTime"://日期類型
System.DateTime dateV;
System.DateTime.TryParse(drValue, out dateV);
newCell.SetCellValue(dateV);
newCell.CellStyle = dateStyle;//格局化顯示
break;
case "System.Boolean"://布爾型
bool boolV = false;
bool.TryParse(drValue, out boolV);
newCell.SetCellValue(boolV);
break;
case "System.Int16"://整型
case "System.Int32":
case "System.Int64":
case "System.Byte":
int intV = 0;
int.TryParse(drValue, out intV);
newCell.SetCellValue(intV);
break;
case "System.Decimal"://浮點型
case "System.Double":
double doubV = 0;
double.TryParse(drValue, out doubV);
newCell.SetCellValue(doubV);
break;
case "System.DBNull"://空值處置
newCell.SetCellValue("");
break;
default:
newCell.SetCellValue("");
break;
}
}
#endregion
rowIndex++;
}
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
sheet.Dispose();
return ms;
}
}
導入代碼：
/// <summary>
/// 讀取excel ,默許第一行動標頭
/// </summary>
/// <param name="strFileName">excel文檔途徑</param>
/// <returns></returns>
public static DataTable Import(string strFileName)
{
DataTable dt = new DataTable();
HSSFWorkbook hssfworkbook;
using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
{
hssfworkbook = new HSSFWorkbook(file);
}
ISheet sheet = hssfworkbook.GetSheetAt(0);
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
IRow headerRow = sheet.GetRow(0);
int cellCount = headerRow.LastCellNum;
for (int j = 0; j < cellCount; j++)
{
ICell cell = headerRow.GetCell(j);
dt.Columns.Add(cell.ToString());
}
for (int i = (sheet.FirstRowNum + 1); i <= sheet.LastRowNum; i++)
{
IRow row = sheet.GetRow(i);
DataRow dataRow = dt.NewRow();
for (int j = row.FirstCellNum; j < cellCount; j++)
{
if (row.GetCell(j) != null)
dataRow[j] = row.GetCell(j).ToString();
}
dt.Rows.Add(dataRow);
}
return dt;
}
2.應用C#發射方法挪用Excel停止，不須要援用Excel.dll組件。此種辦法不建議，太費事，也須要裝置Office。
挪用辦法以下：
private void Export2Excel(DataGridView datagridview, bool captions)
{
object objApp_Late;
object objBook_Late;
object objBooks_Late;
object objSheets_Late;
object objSheet_Late;
object objRange_Late;
object[] Parameters;
string[] headers = new string[datagridview.DisplayedColumnCount(true)];
string[] columns = new string[datagridview.DisplayedColumnCount(true)];
string[] colName = new string[datagridview.DisplayedColumnCount(true)];
int i = 0;
int c = 0;
int m = 0;
for (c = 0; c < datagridview.Columns.Count; c++)
{
for (int j = 0; j < datagridview.Columns.Count; j++)
{
DataGridViewColumn tmpcol = datagridview.Columns[j];
if (tmpcol.DisplayIndex == c)
{
if (tmpcol.Visible) //不顯示的隱蔽列初始化為tag＝0
{
headers[c - m] = tmpcol.HeaderText;
i = c - m + 65;
columns[c - m] = Convert.ToString((char)i);
colName[c - m] = tmpcol.Name;
}
else
{
m++;
}
break;
}
}
}
try
{
// Get the class type and instantiate Excel.
Type objClassType;
objClassType = Type.GetTypeFromProgID("Excel.Application");
objApp_Late = Activator.CreateInstance(objClassType);
//Get the workbooks collection.
objBooks_Late = objApp_Late.GetType().InvokeMember("Workbooks", BindingFlags.GetProperty, null, objApp_Late, null);
//Add a new workbook.
objBook_Late = objBooks_Late.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, objBooks_Late, null);
//Get the worksheets collection.
objSheets_Late = objBook_Late.GetType().InvokeMember("Worksheets", BindingFlags.GetProperty, null, objBook_Late, null);
//Get the first worksheet.
Parameters = new Object[1];
Parameters[0] = 1;
objSheet_Late = objSheets_Late.GetType().InvokeMember("Item", BindingFlags.GetProperty, null, objSheets_Late, Parameters);
if (captions)
{
// Create the headers in the first row of the sheet
for (c = 0; c < datagridview.DisplayedColumnCount(true); c++)
{
//Get a range object that contains cell.
Parameters = new Object[2];
Parameters[0] = columns[c] + "1";
Parameters[1] = Missing.Value;
objRange_Late = objSheet_Late.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, objSheet_Late, Parameters);
//Write Headers in cell.
Parameters = new Object[1];
Parameters[0] = headers[c];
objRange_Late.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, objRange_Late, Parameters);
}
}
// Now add the data from the grid to the sheet starting in row 2
for (i = 0; i < datagridview.RowCount; i++)
{
c = 0;
foreach (string txtCol in colName)
{
DataGridViewColumn col = datagridview.Columns[txtCol];
if (col.Visible)
{
//Get a range object that contains cell.
Parameters = new Object[2];
Parameters[0] = columns[c] + Convert.ToString(i + 2);
Parameters[1] = Missing.Value;
objRange_Late = objSheet_Late.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, objSheet_Late, Parameters);
//Write Headers in cell.
Parameters = new Object[1];
//Parameters[0] = datagridview.Rows[i].Cells[headers[c]].Value.ToString();
Parameters[0] = datagridview.Rows[i].Cells[col.Name].Value.ToString();
objRange_Late.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, objRange_Late, Parameters);
c++;
}
}
}
//Return control of Excel to the user.
Parameters = new Object[1];
Parameters[0] = true;
objApp_Late.GetType().InvokeMember("Visible", BindingFlags.SetProperty,
null, objApp_Late, Parameters);
objApp_Late.GetType().InvokeMember("UserControl", BindingFlags.SetProperty,
null, objApp_Late, Parameters);
}
catch (Exception theException)
{
String errorMessage;
errorMessage = "Error: ";
errorMessage = String.Concat(errorMessage, theException.Message);
errorMessage = String.Concat(errorMessage, " Line: ");
errorMessage = String.Concat(errorMessage, theException.Source);
MessageBox.Show(errorMessage, "Error");
}
}
System.Type ExcelType = System.Type.GetTypeFromProgID("Excel.Application");
Microsoft.Office.Interop.Excel.Application obj = Activator.CreateInstance(ExcelType) as Microsoft.Office.Interop.Excel.Application;
以上就是本文的全體內容，願望對年夜家的進修有所贊助，也願望年夜家多多支撐。
