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我将自定义变量类型从一个操作传递给工作流中的另一个操作。这里是自定义对象windows工作流基础 - 在工作流中的不同活动之间传递自定义变量
public class ConfigDatabase
{
public string Name;
public string Host;
public string Port;
public string Instance;
public string User;
public string Password;
}
public class ConfigDatabases
{
public string DatabaseToUse;
public List<ConfigDatabase> DatabaseList;
public ConfigDatabases()
{
DatabaseList = new List<ConfigDatabase>();
}
}
public class ConfigEnvironment
{
public ConfigDatabases EnvironmentConfigDatabase;
public ConfigEnvironment()
{
EnvironmentConfigDatabase = new ConfigDatabases();
}
public ConfigDatabase ReturnDatabaseInfo()
{
ConfigDatabase ConfigDatabaseInfo = new ConfigDatabase();
for (int Count1 = 0; Count1 < EnvironmentConfigDatabase.DatabaseList.Count; Count1++)
{
if (EnvironmentConfigDatabase.DatabaseList[Count1].Name == EnvironmentConfigDatabase.DatabaseToUse)
{
ConfigDatabaseInfo = EnvironmentConfigDatabase.DatabaseList[Count1];
return ConfigDatabaseInfo;
}
}
return ConfigDatabaseInfo;
}
public string GetDatabaseConnectionString()
{
ConfigDatabase DatabaseInfo = ReturnDatabaseInfo();
string ConnectionString = "Data Source=(description=(address=(protocol=tcp)(host=" + DatabaseInfo.Host + ")(port=" + DatabaseInfo.Port + "))(connect_data=(sid=" + DatabaseInfo.Instance + ")));User ID=" + DatabaseInfo.User + ";Password=" + DatabaseInfo.Password + ";";
return ConnectionString;
}
}
的定义期间动作的第一步骤中，它会运行下面的代码来加载在被在函数返回的对象（ConfigEnvironment）从一个文件和存储的配置数据执行
public sealed class InitializeEnvironment : CodeActivity<ConfigEnvironment>
{
// Define an activity input argument of type string
public InArgument<string> EnvironmentFileLocation { get; set; }
// If your activity returns a value, derive from CodeActivity<TResult>
// and return the value from the Execute method.
protected override ConfigEnvironment Execute(CodeActivityContext context)
{
// Obtain the runtime value of the Text input argument
string EnvironmentFile = context.GetValue(this.EnvironmentFileLocation);
EnvironmentConfigInitialization EnvironmentInitialize = new EnvironmentConfigInitialization(EnvironmentFile);
ConfigEnvironment EnvironmentDetail = EnvironmentInitialize.LoadData();
return EnvironmentDetail;
}
}
在工作流程的后续活动中，我想获取存储在此对象中的数据。但是，下面的代码会产生编译错误，因为EnvironmentDetail对象找不到GetDatabaseConnectionString函数。
public sealed class ExecuteSQL : CodeActivity<DataRowCollection>
{
// Define an activity input argument of type string
public InArgument<string> SQLScript { get; set; }
public InArgument<ConfigEnvironment> EnvironmentDetail { get; set; }
// If your activity returns a value, derive from CodeActivity<TResult>
// and return the value from the Execute method.
protected override DataRowCollection Execute(CodeActivityContext context)
{
string connectionString4 = EnvironmentDetail.GetDatabaseConnectionString(); //This create a compile error
}
}
的编译警告是下列 “System.Activities.InArgument”不包含关于“GetDatabaseConnectionString”和没有扩展方法的定义“GetDatabaseConnectionString”接受类型的第一个参数“系统.Activities.InArgument”可以找到（是否缺少using指令或程序集引用？）