1.首先备份当前安装visualSVN文件的bin目录，万一出错还能反个水。一般默认安装路径是C：Program Files(x86)VisualSVNin
2.然后运行ildasm,Window中有自带的反编译ildasm工具，位于“C：Program FilesMicrosoft SDKsWindowsv7.0Ain”.
3.用ildasm打开刚才备份的bin目录下的VisualSVPN.Core.L.dll,单击文件菜单点击转储。
4.得到同名的il文件：VisualSVN.Core.L.il,用记事本打开得到的VisualSVN.Core.L.il文件，在其中搜索“KeyToLicenseUnsafe”,找到KeyToLicenseUnsafe方法，大概在3188行附近。查找并替换成下面的代码，然后保存
.method public hidebysig static class VisualSVN.Core.Licensing.License
KeyToLicenseUnsafe(class VisualSVN.Core.IDecoder decoder,
string key) cil managed
{
// 代码大小 69 (0x45)
.locals init (class VisualSVN.Core.Licensing.License V_0, class VisualSVN.Core.Licensing.License V_1, class VisualSVN.Core.Licensing.License V_2)
IL_0000: nop
IL_0001: newobj instance void VisualSVN.Core.Licensing.License::.ctor()
IL_0006: stloc.
IL_0007: ldloc.
IL_0008: ldsfld valuetype [mscorlib]System.DateTime [mscorlib]System.DateTime::MinValue
IL_000d: stfld valuetype [mscorlib]System.DateTime VisualSVN.Core.Licensing.License::StartTime
IL_0012: ldloc.
IL_0013: ldc.i4.
IL_0014: stfld valuetype VisualSVN.Core.Licensing.LicenseBinding VisualSVN.Core.Licensing.License::Binding
IL_0019: ldloc.
IL_001a: ldc.i4 0x7ffffffe
IL_001f: stfld int32 VisualSVN.Core.Licensing.License::Capacity
IL_0024: ldloc.
IL_0025: ldsfld valuetype [mscorlib]System.DateTime [mscorlib]System.DateTime::MaxValue
IL_002a: stfld valuetype [mscorlib]System.DateTime VisualSVN.Core.Licensing.License::EndTime
IL_002f: ldloc.
IL_0030: ldc.i4.
IL_0031: stfld valuetype VisualSVN.Core.Licensing.LicenseType VisualSVN.Core.Licensing.License::Type
IL_0036: ldloc.
IL_0037: ldstr "
IL_003c: stfld string VisualSVN.Core.Licensing.License::PurchaseId
IL_0041: ldloc.
IL_0042: call string [mscorlib]System.Environment::get_UserName()
IL_0047: stfld string VisualSVN.Core.Licensing.License::LicensedTo
IL_004c: ldloc.
IL_004d: stloc.
IL_004e: ldloc.
IL_004f: ldloc.
IL_0050: ldfld valuetype [mscorlib]System.DateTime VisualSVN.Core.Licensing.License::StartTime
IL_0055: stfld valuetype [mscorlib]System.DateTime VisualSVN.Core.Licensing.License::PurchaseDate
IL_005a: ldloc.
IL_005b: stloc.
IL_005c: br.s
IL_005e
IL_005e:ldloc.
IL_005f: ret
} // end of method LicenseConverter::KeyToLicenseUnsafe
--------------------- 作者：木生火 来源：CSDN 原文：https://blog.csdn.net/msh2016/article/details/85556127 版权声明：本文为博主原创文章，转载请附上博文链接！
5.用管理员权限打开VS命令提示工具
6.运行下面的代码，看到successfully表示成功了。将重新编译的dll文件覆盖到安装目录中就OK了。"ildasm"备份目录VisualSVN.Core.L.il" /output="备份目录VisualSVN.Core.L.dll" /dll
7.然后运行你的VS就可以看到VisualSVN已经没有Lisence时间限制啦