后期绑定的好处是:对于不同版本的软件都能支持。如果机器A上安装的Office 2003,机器B上安装Office 2007,没问题,下面代码都能正常运行。但是如果采用前期绑定就不行了。关于“前期绑定和后期绑定”,“Excel专业开发”一书的3.3.3节(43页)说的非常清楚。
private void Test()
{
DataTable table = new DataTable();
table.Columns.Add("ID", System.Type.GetType("System.Int32"));
table.Columns.Add("Name", System.Type.GetType("System.String"));
for (int i = 0; i < 22; i++)
{
DataRow row = table.NewRow();
row["ID"] = i;
row["Name"] = "name" + i;
table.Rows.Add(row);
}
try
{
this.Cursor = Cursors.AppStarting;
//例如在中文系统下安装的是英文的Office,就需要指定CultureInfo为en-US
ExportToExcel(table, new System.Globalization.CultureInfo("en-US"));
this.Cursor = Cursors.Default;
}
catch (Exception ex)
{
MessageBox.Show("Exception \n" + ex.Message + "\nStack Trace: \n" + ex.StackTrace.ToString(), "信息提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
public void ExportToExcel(System.Data.DataTable table)
{
ExportToExcel(table, System.Globalization.CultureInfo.CurrentCulture);
}
public void ExportToExcel(System.Data.DataTable table, System.Globalization.CultureInfo cultureInfoOfOffice)
{
object excel;
object book;
object books;
object sheet;
object sheets;
object range;
object[] parameters;
Type ExcelType;
parameters = new object[1];
//获取Excel类型
ExcelType = Type.GetTypeFromProgID("Excel.Application");
excel = Activator.CreateInstance(ExcelType);
//获取workbooks集合
books = excel.GetType().InvokeMember("Workbooks", BindingFlags.GetProperty, null, excel, null);
//新增workbook.
//BUG:自动化 Excel 时出现“格式太旧或是类型库无效”错误
//http://support.microsoft.com/kb/320369/zh-cn
//如果满足以下条件,在调用某个 Excel 方法时会收到此错误:
//* 该方法需要一个 LCID(区域设置标识符)。
//* 运行的是英语版本的 Excel。但是,计算机的区域设置是针对非英语语言配置的。
//如果客户端计算机运行的是英语版本的 Excel 并且当前用户的区域设置配置为英语之外的某个语言,则 Excel 将尝试查找针对所配置语言的语言包。
//如果没有找到所需语言包,则会报告错误。
book = books.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, books, null, cultureInfoOfOffice);
//获取worksheets集合
sheets = book.GetType().InvokeMember("Worksheets", BindingFlags.GetProperty, null, book, null);
//获取第一个 worksheet.
parameters[0] = 1;
sheet = sheets.GetType().InvokeMember("Item", BindingFlags.GetProperty, null, sheets, parameters);
//获取A1单元格所在区域
object[] header = new Object[table.Columns.Count];
parameters = new object[1];
parameters[0] = "A1:" + Convert.ToString(Convert.ToChar(64 + table.Columns.Count)) + "1";
range = sheet.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, sheet, parameters);
//在A1单元格中填充数据.
parameters = new object[1];
for (int i = 0; i < table.Columns.Count; i++)
{
header[i] = table.Columns[i].ToString();
}
parameters[0] = header;
range.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range, parameters, cultureInfoOfOffice);
parameters = new object[2];
parameters[0] = "A2:" + Convert.ToString(Convert.ToChar(64 + table.Columns.Count)) + (table.Rows.Count + 1).ToString().Trim();
parameters[1] = Missing.Value;
range = sheet.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, sheet, parameters);
parameters = new object[1];
Object[,] data = new Object[table.Rows.Count, table.Columns.Count];
for (int i = 0; i < table.Rows.Count; i++)
{
for (int j = 0; j < table.Columns.Count; j++)
{
data[i, j] = table.Rows[i][j].ToString();
}
}
parameters[0] = data;
range.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range, parameters, cultureInfoOfOffice);
parameters = new object[1];
//启动 Excel
parameters[0] = true;
excel.GetType().InvokeMember("Visible", BindingFlags.SetProperty, null, excel, parameters);
excel.GetType().InvokeMember("UserControl", BindingFlags.SetProperty, null, excel, parameters);
}
DataTable的使用技巧可参考:
http://www.cnblogs.com/dreamof/archive/2008/07/31/1257660.html
private void Test()
{
DataTable table = new DataTable();
table.Columns.Add("ID", System.Type.GetType("System.Int32"));
table.Columns.Add("Name", System.Type.GetType("System.String"));
for (int i = 0; i < 22; i++)
{
DataRow row = table.NewRow();
row["ID"] = i;
row["Name"] = "name" + i;
table.Rows.Add(row);
}
try
{
this.Cursor = Cursors.AppStarting;
//例如在中文系统下安装的是英文的Office,就需要指定CultureInfo为en-US
ExportToExcel(table, new System.Globalization.CultureInfo("en-US"));
this.Cursor = Cursors.Default;
}
catch (Exception ex)
{
MessageBox.Show("Exception \n" + ex.Message + "\nStack Trace: \n" + ex.StackTrace.ToString(), "信息提示",
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
public void ExportToExcel(System.Data.DataTable table)
{
ExportToExcel(table, System.Globalization.CultureInfo.CurrentCulture);
}
public void ExportToExcel(System.Data.DataTable table, System.Globalization.CultureInfo cultureInfoOfOffice)
{
object excel;
object book;
object books;
object sheet;
object sheets;
object range;
object[] parameters;
Type ExcelType;
parameters = new object[1];
//获取Excel类型
ExcelType = Type.GetTypeFromProgID("Excel.Application");
excel = Activator.CreateInstance(ExcelType);
//获取workbooks集合
books = excel.GetType().InvokeMember("Workbooks", BindingFlags.GetProperty, null, excel, null);
//新增workbook.
//BUG:自动化 Excel 时出现“格式太旧或是类型库无效”错误
//http://support.microsoft.com/kb/320369/zh-cn
//如果满足以下条件,在调用某个 Excel 方法时会收到此错误:
//* 该方法需要一个 LCID(区域设置标识符)。
//* 运行的是英语版本的 Excel。但是,计算机的区域设置是针对非英语语言配置的。
//如果客户端计算机运行的是英语版本的 Excel 并且当前用户的区域设置配置为英语之外的某个语言,则 Excel 将尝试查找针对所配置语言的语言包。
//如果没有找到所需语言包,则会报告错误。
book = books.GetType().InvokeMember("Add", BindingFlags.InvokeMethod, null, books, null, cultureInfoOfOffice);
//获取worksheets集合
sheets = book.GetType().InvokeMember("Worksheets", BindingFlags.GetProperty, null, book, null);
//获取第一个 worksheet.
parameters[0] = 1;
sheet = sheets.GetType().InvokeMember("Item", BindingFlags.GetProperty, null, sheets, parameters);
//获取A1单元格所在区域
object[] header = new Object[table.Columns.Count];
parameters = new object[1];
parameters[0] = "A1:" + Convert.ToString(Convert.ToChar(64 + table.Columns.Count)) + "1";
range = sheet.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, sheet, parameters);
//在A1单元格中填充数据.
parameters = new object[1];
for (int i = 0; i < table.Columns.Count; i++)
{
header[i] = table.Columns[i].ToString();
}
parameters[0] = header;
range.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range, parameters, cultureInfoOfOffice);
parameters = new object[2];
parameters[0] = "A2:" + Convert.ToString(Convert.ToChar(64 + table.Columns.Count)) + (table.Rows.Count + 1).ToString().Trim();
parameters[1] = Missing.Value;
range = sheet.GetType().InvokeMember("Range", BindingFlags.GetProperty, null, sheet, parameters);
parameters = new object[1];
Object[,] data = new Object[table.Rows.Count, table.Columns.Count];
for (int i = 0; i < table.Rows.Count; i++)
{
for (int j = 0; j < table.Columns.Count; j++)
{
data[i, j] = table.Rows[i][j].ToString();
}
}
parameters[0] = data;
range.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range, parameters, cultureInfoOfOffice);
parameters = new object[1];
//启动 Excel
parameters[0] = true;
excel.GetType().InvokeMember("Visible", BindingFlags.SetProperty, null, excel, parameters);
excel.GetType().InvokeMember("UserControl", BindingFlags.SetProperty, null, excel, parameters);
}
DataTable的使用技巧可参考:
http://www.cnblogs.com/dreamof/archive/2008/07/31/1257660.html
本文转自 h2appy 51CTO博客,原文链接:http://blog.51cto.com/h2appy/240830,如需转载请自行联系原作者