/// <summary> /// 得到一个对象实体 /// </summary> public static MStrategy GetModel(int ID) { StringBuilder strSql = new StringBuilder(); strSql.Append("select ID, StockNo, StockName,Price,Amount,HoldFlag,BasePoint "); strSql.Append(" from Strategy "); strSql.Append(" where ID=@ID"); OleDbParameter[] parameters = { new OleDbParameter("@ID", OleDbType.Integer, 4) }; parameters[0].Value = ID; MStrategy model = new MStrategy(); DataSet ds = DbHelperOleDb.Query(strSql.ToString(), parameters); if (ds.Tables[0].Rows.Count > 0) { if (ds.Tables[0].Rows[0]["ID"].ToString() != "") { model.ID = int.Parse(ds.Tables[0].Rows[0]["ID"].ToString()); } model.StockNo = ds.Tables[0].Rows[0]["StockNo"].ToString(); model.StockName = ds.Tables[0].Rows[0]["StockName"].ToString(); if (ds.Tables[0].Rows[0]["Price"].ToString() != "") { model.Price = Double.Parse(ds.Tables[0].Rows[0]["Price"].ToString()); } if (ds.Tables[0].Rows[0]["Amount"].ToString() != "") { model.Amount = int.Parse(ds.Tables[0].Rows[0]["Amount"].ToString()); } if (ds.Tables[0].Rows[0]["HoldFlag"].ToString() != "") { model.HoldFlag = Boolean.Parse(ds.Tables[0].Rows[0]["HoldFlag"].ToString()); } if (ds.Tables[0].Rows[0]["BasePoint"].ToString() != "") { model.BasePoint = Boolean.Parse(ds.Tables[0].Rows[0]["BasePoint"].ToString()); } return(model); } else { return(null); } }
private void btnSave_Click(object sender, EventArgs e) { //先删除数据库中的记录再保存 Strategy.Delete(StockNo); foreach (DataGridViewRow dgvr in dgvStrategy.Rows) { MStrategy model = new MStrategy(); model.StockNo = StockNo; model.StockName = StockName; model.Price = double.Parse(dgvr.Cells["colStockPrice"].Value.ToString()); model.Amount = int.Parse(dgvr.Cells["colAmount"].Value.ToString()); model.HoldFlag = bool.Parse(dgvr.Cells["colHoldFlag"].Value.ToString()); //var abc= ((DataGridViewCheckBoxCell)dgvr.Cells["colHoldFlag"]).Value; model.BasePoint = bool.Parse(dgvr.Cells["colBaseFlag"].Value.ToString()); Strategy.Add(model); } MessageBox.Show("保存成功"); }
/// <summary> /// 更新一条数据 /// </summary> public static bool Update(MStrategy model) { StringBuilder strSql = new StringBuilder(); strSql.Append("update [Strategy] set "); strSql.Append("[StockNo]=@StockNo,"); strSql.Append("[StockName]=@StockName,"); strSql.Append("[Price]=@Price,"); strSql.Append("[Amount]=@Amount,"); strSql.Append("[HoldFlag]=@HoldFlag"); strSql.Append("[BasePoint]=@BasePoint"); strSql.Append(" where [ID]=@ID"); OleDbParameter[] parameters = { new OleDbParameter("@StockNo", OleDbType.VarChar, 255), new OleDbParameter("@StockName", OleDbType.VarChar, 255), new OleDbParameter("@Price", OleDbType.Double, 4), new OleDbParameter("@Amount", OleDbType.Integer), new OleDbParameter("@HoldFlag", OleDbType.Boolean), new OleDbParameter("@BasePoint", OleDbType.Boolean), new OleDbParameter("@ID", OleDbType.Integer) }; parameters[0].Value = model.StockNo; parameters[1].Value = model.StockName; parameters[2].Value = model.Price; parameters[3].Value = model.Amount; parameters[4].Value = model.HoldFlag; parameters[6].Value = model.ID; int rows = DbHelperOleDb.ExecuteSql(strSql.ToString(), parameters); if (rows > 0) { return(true); } else { return(false); } }
/// <summary> /// 增加一条数据 /// </summary> public static int Add(MStrategy model) { StringBuilder strSql = new StringBuilder(); strSql.Append("insert into Strategy("); strSql.Append("StockNo,StockName,Price,Amount,HoldFlag,BasePoint"); strSql.Append(") values ("); strSql.Append("@StockNo,@StockName,@Price,@Amount,@HoldFlag,@BasePoint"); strSql.Append(") "); //strSql.Append(";select @@IDENTITY"); OleDbParameter[] parameters = { new OleDbParameter("@StockNo", OleDbType.VarChar, 255), new OleDbParameter("@StockName", OleDbType.VarChar, 255), new OleDbParameter("@Price", OleDbType.Double), new OleDbParameter("@Amount", OleDbType.Integer, 4), new OleDbParameter("@HoldFlag", OleDbType.Boolean), new OleDbParameter("@BasePoint", OleDbType.Boolean) }; parameters[0].Value = model.StockNo; parameters[1].Value = model.StockName; parameters[2].Value = model.Price; parameters[3].Value = model.Amount; parameters[4].Value = model.HoldFlag; parameters[5].Value = model.BasePoint; //parameters[6].Value = model.ID; object obj = DbHelperOleDb.GetSingle(strSql.ToString(), parameters); if (obj == null) { return(0); } else { return(Convert.ToInt32(obj)); } }