MethodInfo Invoke 未将对象引用设置到对象的实例？？
public abstract class AbstractService { public abstract void Load(); public abstract Int32 Save(); public abstract object DataSource{ get; } } /// 数据服务的抽象化（数据服务的基类） public abstract class AbstractServiceDS<TDataTable, TAdapter> : AbstractService where TDataTable : DataTable, new() where TAdapter : class, new () { private TDataTable _table = null; private TAdapter _adapter = null; private MethodInfo _adMethodFill = null; private MethodInfo _adMethodUpdate = null; // // 无参数构造函数 // public AbstractServiceDS() { this._table = new TDataTable(); this._adapter = new TAdapter(); //初始化反射方法 this.InitReflectionMethods(); } // // 外部数据集的构造函数 // public AbstractServiceDS(TDataTable table, TAdapter adapter) { this._table = table; this._adapter = adapter; //初始化反射方法 this.InitReflectionMethods(); } //初始化反射方法 private void InitReflectionMethods() { try { Type typeAdapter = typeof(TAdapter); this._adMethodFill = typeAdapter.GetMethod("Fill"); this._adMethodUpdate = typeAdapter.GetMethod("Update", new Type[]{ typeof(TDataTable) }); } catch (System.Exception ex) { System.Console.WriteLine(ex.Message); } } public override void Load() { object[] args = new object[] { this._table }; _adMethodFill.Invoke(this._adapter, args); } //重写保存的虚方法 public override int Save() { int nRows = 0; try { object[] args = new object[] { this._table }; nRows = (int)_adMethodUpdate.Invoke(this._adapter, args);//在这就跑出“未将对象引用设置到对象的实例？ ” this._table.AcceptChanges(); } catch (System.Exception ex) { System.Console.WriteLine(ex.Message); } return nRows; } public override object DataSource { get { return this._table; } } public TAdapter Adapter { get { return this._adapter; } protected set { this._adapter = value; } } }}