dataparameter.cs

.net的数据持久层

using System;
using System.Data;

namespace Platform.Data {

	public class DataParameter : IDbDataParameter, ICloneable {

		private byte _Precision;
		private byte _Scale;
		private int _Size;
		private DataRowVersion _SourceVersion;
		private string _SourceColumn;
		private string _ParameterName;
		private object _Value;
		private DbType _DbType;
		private ParameterDirection _Direction;

		public DataParameter() {
			this.Direction = ParameterDirection.Input;
			this.SourceVersion = DataRowVersion.Default;
		}

		public DataParameter(string parameterName, object value) : this() {
			this.ParameterName = parameterName;
			this.Value = value;
		}

		public byte Precision {
			get { return _Precision; }
			set { _Precision = value; }
		}

		public byte Scale {
			get { return _Scale; }
			set { _Scale = value; }
		}

		public int Size {
			get { return _Size; }
			set { _Size = value; }
		}

		public ParameterDirection Direction {
			get { return _Direction; }
			set { _Direction = value; }
		}

		public DbType DbType {
			get { return _DbType; }
			set { _DbType = value; }
		}

		public object Value {
			get { return _Value; }
			set { _Value = value; }
		}

		public bool IsNullable {
			get { return false; }
		}

		public DataRowVersion SourceVersion {
			get { return _SourceVersion; }
			set { _SourceVersion = value; }
		}

		public string ParameterName {
			get { return _ParameterName; }
			set { _ParameterName = value; }
		}

		public string SourceColumn {
			get { return _SourceColumn; }
			set { _SourceColumn = value; }
		}

		public object Clone() {
			DataParameter dp = new DataParameter(this.ParameterName, this.Value );
			dp.Precision = this.Precision;
			dp.Size = this.Size;
			dp.Scale = this.Scale;
			dp.SourceColumn = this.SourceColumn;
			dp.SourceVersion = this.SourceVersion;
			dp.Direction = this.Direction;
			dp.DbType = this.DbType;
			return dp;
		}
	}
}