1. 添加数字签名
C#
using Spire.Xls;using Spire.Xls.Core.MergeSpreadsheet.Interfaces;using System;using System.Security.Cryptography.X509Certificates;namespace DigitalSignature_XLS
{
class Program
{
staticvoidMain(string[] args)
{
//创建Workbook实例Workbook workbook =new Workbook();
//加载Excel文档workbook.LoadFromFile("sample.xlsx");
//添加数字签名X509Certificate2 cert =newX509Certificate2("gary.pfx","123456");
DateTime certtime =newDateTime(2020,7,1,7,10,36);
IDigitalSignatures signature = workbook.AddDigitalSignature(cert,"Manager", certtime);
//保存文档workbook.SaveToFile("AddDigitalSignature.xlsx", FileFormat.Version2013);
System.Diagnostics.Process.Start("AddDigitalSignature.xlsx");
}
}
}
VB.NET
Imports Spire.XlsImports Spire.Xls.Core.MergeSpreadsheet.InterfacesImports System.Security.Cryptography.X509CertificatesNamespace DigitalSignature_XLS
Class Program
PrivateSharedSubMain(argsAsString())
'创建Workbook实例DimworkbookAsNew Workbook()
'加载Excel文档workbook.LoadFromFile("sample.xlsx")
'添加数字签名DimcertAsNewX509Certificate2("gary.pfx","123456")
DimcerttimeAsNewDateTime(2020,7,1,7,10,36)
DimsignatureAsIDigitalSignatures = workbook.AddDigitalSignature(cert,"Manager", certtime)
'保存文档workbook.SaveToFile("AddDigitalSignature.xlsx", FileFormat.Version2013)
System.Diagnostics.Process.Start("AddDigitalSignature.xlsx")
End SubEnd ClassEnd Namespace
数字签名添加效果：
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2. 删除Excel中的数字签名
C#
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using Spire.Xls;namespace RemoveSignature
{
class Program
{
staticvoidMain(string[] args)
{
//加载Excel文档Workbook workbook =new Workbook();
workbook.LoadFromFile("AddDigitalSignature.xlsx");
//删除文档中的数字签名 workbook.RemoveAllDigitalSignatures();
//保存文档workbook.SaveToFile("RemoveDigitalSignature.xlsx", FileFormat.Version2013);
System.Diagnostics.Process.Start("RemoveDigitalSignature.xlsx");
}
}
}
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VB.NET
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Imports Spire.XlsNamespace RemoveSignature
Class Program
PrivateSharedSubMain(argsAsString())
'加载Excel文档DimworkbookAsNew Workbook()
workbook.LoadFromFile("AddDigitalSignature.xlsx")
'删除文档中的数字签名 workbook.RemoveAllDigitalSignatures()
'保存文档workbook.SaveToFile("RemoveDigitalSignature.xlsx", FileFormat.Version2013)
System.Diagnostics.Process.Start("RemoveDigitalSignature.xlsx")
End SubEnd ClassEnd Namespace
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