程序集createinstance和Crystal報告問題

Question

我加載一個程序集

private System.Reflection.Assembly;
object myData;

myAssembly = System.Reflection.Assembly.LoadFile("C:\\CrystalDecisions.CrystalReports.Engine.dll");

然后我創建一個實例。

myData=myAssembly.CreateInstance("CrystalDecisions.CrystalReports.Engine.ReportDocument", true);

此myData始終返回null，是否想到為什么在myAssembly具有程序集信息及其公鑰令牌的地方返回null？

Answer 1

請嘗試以下類似的方法。

// dynamically load assembly from file Test.dll
Assembly myData = Assembly.LoadFile(@"C:\CrystalDecisions.CrystalReports.Engine.dll");

// get type of class Calculator from just loaded assembly
Type myData = myData.GetType("CrystalDecisions.CrystalReports")

// create instance of class Calculator
object myDataInstance = Activator.CreateInstance(myData);

反射示例C＃