[英]How to assign class type to generic Type <T>?
I have a class to execute particular logic as below:我有一个类来执行特定的逻辑如下:
public abstract class BaseSchema<T> : iMyInterface
{
public List<T> GetSchemaObjects<T>(string csvData) where T : iMyInterface
{
var records = new List<T>();
using (var streamReader = new StreamReader(csvData))
{
using (var csvReader = new CsvReader(streamReader, CultureInfo.InvariantCulture))
{
records = csvReader.GetRecords<T>().ToList();
}
}
return records;
}
}
Now I want to call this method with a Class as parameter.现在我想用一个类作为参数来调用这个方法。 I have Type object for the class.
我有该类的 Type 对象。 How do I assign while calling?
通话时如何分配?
public List<T> GetTestSchema<T>(string versionNumber, string schemaName) where T : iMyInterface
{
Type[] allSchemaTypes = Assembly.GetExecutingAssembly().GetTypes()
.Where(t => t.IsClass && t.Namespace.StartsWith($"{schemaNamespace}")
&& !t.GetCustomAttributes(typeof(ObsoleteAttribute), true).Any())
.ToArray();
int indexNumber = GetIndexNumberOfRequiredVersion(versionNumber);
Type schemaType = allSchemaTypes
.Skip(indexNumber)
.Where(x => x.Name.Equals(schemaName) && interfaceType.IsAssignableFrom(x))
.FirstOrDefault();
var objj = (iMyInterface)schemaType.Assembly.CreateInstance(schemaType.ToString());
//Type objjType = Type.GetType(objj);
return objj.GetSchemaObjects<schemaType>(@"CSV Path"); // This line gives an error as Cannot implicitly convert type List<schemaType> to List<T> but generic should accept it. Isn't it?
}
You can use MakeGenericMethod
something like:您可以使用
MakeGenericMethod
类似的东西:
MethodInfo getSchemaObjectsMethod = typeof(iMyInterface).GetMethod("GetSchemaObjects");
MethodInfo getSchemaObjectsGeneric = getSchemaObjectsMethod.MakeGenericMethod(schemaType);
return getSchemaObjectsGeneric.Invoke(null, new object[] { "CSV Path" });
See: How do I use reflection to call a generic method?请参阅: 如何使用反射来调用泛型方法?
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