问题：

在打印模板中获取子表内容，可从数据库中取数据，而当前项目数据库里面数据按年度录入，但是只需要显示近3年的数据，插件如何实现排序取数据？

解决方法：

1、先直接写一个SQL语句，把近3年排序后的数据读取出来

2、在调用子表接口加载数据

3、示例：

varmonthly = DateTime.Now.Month;

var selectsql =string.Format(@"SELECT

t1.Yearly,

t1.Monthly,

t1.BudgetUnitName,

t1.BudgetUnitCode,

t1.BudgetItemName,

t1.BudgetItemCode,

t1.Budget

FROM XL_YS_BudgetPay t1

WHEREt1.Yearly = {0}

--AND Monthly > {1}

AND t1.BudgetUnitCode = '{2}'

AND BudgetItemCode = '{3}'

ORDER BY Monthly", yearly, monthly, budgetunitcode,budgetitemcode);

var dt =OThinker.H3.WorkSheet.AppUtility.Engine.Query.QueryTable(selectsql);

var list = newList<BizObject>();

var monthlist = newList<string> { "Jan", "Feb", "Mar","Apr", "May", "Jun", "Jul","Aug", "Sep", "Oct", "Nov","December" };

if (dt.Rows.Count > 0)

{

//DeptCostBudgetInfo 为子表名称

BizObjectSchemachildSchema = this.ActionContext.Schema.GetProperty("DeptCostBudgetInfo").ChildSchema;

varbizObject = new BizObject(this.ActionContext.Engine, childSchema,this.ActionContext.User.UserID);

bizObject["DataType"]= "原始";

bizObject["BudgetItemName"]= dt.Rows[0]["BudgetItemName"].ToString();

bizObject["BudgetItemCode"]= dt.Rows[0]["BudgetItemCode"].ToString();

varbizObject2 = new BizObject(this.ActionContext.Engine, childSchema,this.ActionContext.User.UserID);

bizObject2["DataType"]= "修改";

bizObject2["BudgetItemName"]= dt.Rows[0]["BudgetItemName"].ToString();

bizObject2["BudgetItemCode"]= dt.Rows[0]["BudgetItemCode"].ToString();

for(int i = 0; i < monthlist.Count; i++)

{

bizObject[monthlist]= dt.Rows["Budget"].ToString();

bizObject2[monthlist]= dt.Rows["Budget"].ToString();

}

list.Add(bizObject);

list.Add(bizObject2);

}

if (bos != null)

{

if (bos.Length > 1)

{

list.AddRange(bos);

}

}

this.ActionContext.InstanceData["DeptCostBudgetInfo"].Value =list.ToArray();

ActionContext.InstanceData.Submit();