个人比较喜欢使用Dapper抓取数据,该ORM抓取到的都是List泛型对象,但锐浪官方的例子都是DataTable加载记录集,所以我就写了一个List泛型加载记录集的方法,供一些和我一样的小菜参考,有问题可以拍砖,谢谢.
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List泛型加载锐浪数据集
public class GridReportHelper
{
private struct MatchFieldPairType
{
public IGRField grField;
public int MatchColumnIndex;
}
//List加载数据集
public static void FillRecordToReport<T>(IGridppReport Report, List<T> listT)
{
Type type = typeof(T); //反射类型
MatchFieldPairType[] MatchFieldPairs = new MatchFieldPairType[Math.Min(Report.DetailGrid.Recordset.Fields.Count, type.GetProperties().Length)];
//根据字段名称与列名称进行匹配,建立DataReader字段与Grid++Report记录集的字段之间的对应关系
int MatchFieldCount = 0;
int i = 0;
MemberInfo[] members = type.GetMembers();
foreach (MemberInfo memberInfo in members)
{
foreach (IGRField fld in Report.DetailGrid.Recordset.Fields)
{
if (String.Compare(fld.Name, memberInfo.Name, true) == 0)
{
MatchFieldPairs[MatchFieldCount].grField = fld;
MatchFieldPairs[MatchFieldCount].MatchColumnIndex = i;
++MatchFieldCount;
break;
}
}
++i;
}
Helper.StringHelper stringhelper = new StringHelper(); //定义string帮助类
// 将 DataTable 中的每一条记录转储到 Grid++Report 的数据集中去
foreach (T t in listT)
{
Report.DetailGrid.Recordset.Append();
for ( i = 0; i < MatchFieldCount; ++i)
{
if (stringhelper.GetValue<T>(t, MatchFieldPairs[i].grField.Name) != null)
MatchFieldPairs[i].grField.Value = stringhelper.GetValue<T>(t, MatchFieldPairs[i].grField.Name);
}
Report.DetailGrid.Recordset.Post();
}
}
}
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第一步: 定义Grid++Report报表主对象
private GridppReport Report = new GridppReport();
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第二步:加载报表模板
Report.LoadFromFile(inifilehelper.ReadValue("ZSLablePrint", "ReportPath"));
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第三步:加载报表事件
Report.PrintAsDesignPaper = true; //打印设置与设计页面一致
//连接报表取数事件
Report.FetchRecord -= new _IGridppReportEvents_FetchRecordEventHandler(ReportFetchRecord);
Report.FetchRecord += new _IGridppReportEvents_FetchRecordEventHandler(ReportFetchRecord);
Report.PrintEnd += new _IGridppReportEvents_PrintEndEventHandler(Report_PrintEnd);
Report.Printer.DesignPrinterName = inifilehelper.ReadValue("ZSLablePrint", "PrinterName"); //默认打印机名称
Report.Printer.PaperName = inifilehelper.ReadValue("ZSLablePrint", "PaperName");
简要说明:
FetchRecordEventHandler事件需要先删除后再加载,是避免数据集重复加载的问题,
PrintEndEventHandler是加载打印后事件,例如打印后记录打印次数。
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第四步: 报表预览
Report.PrintPreview(true);
- 附记录加载方法和打印后事件
/// <summary>
/// 动态加载list
/// </summary>
private void ReportFetchRecord()
{
List<Model.AL_LablesZS> listlableszs = new List<Model.AL_LablesZS>();
Model.AL_LablesZS lableszs = new Model.AL_LablesZS(); //定义标签对象
string strSQL = @"SELECT * FROM AL_LablesZS WHERE ID = @ID";
lableszs = Helper.DapperHelper.GetFirstOrDefault<Model.AL_LablesZS>(strSQL, new { ID = id });
int x = lableszs.FAuxQty;
int y = lableszs.PackageQty;
//判断打印标签数量,每次打印最多10张,避免没有更改每包数量的问题
if (x/y > 10)
{
MessageBox.Show("每次标签打印数量不能超过10张,烦请确定【每包数量】及【生产数量】");
return;
}
int i = 0; //定义序号变量
//添加数据集
while (x>0)
{
i = i + 1;
Model.AL_LablesZS tmp = new Model.AL_LablesZS(); //定义标签对象
tmp = Helper.ObjectHelper.TransReflection<Model.AL_LablesZS, Model.AL_LablesZS>(lableszs);
tmp.FBatch2 = tmp.FBatch2 + i.ToString(); //生产批号2最后一位序号自动增加.
tmp.GUID = tmp.ID.ToString() + "-" + (100 + i).ToString() + DateTime.Now.ToString("HHmmssfff") + "-" + tmp.CZFBatchNo;
if (x>y) //生产数量大于包装数量
{
listlableszs.Add(tmp); //添加一个对象
x = x - y; //添加完成后减少该包装数量
continue; //继续下一循环
}
else
{
tmp.PackageQty = x; //如果不足包装数量时,则包装数量等于剩余数量
listlableszs.Add(tmp);
break; //退出循环
}
}
//自动填充报表数据集
Helper.GridReportHelper.FillRecordToReport<Model.AL_LablesZS>(Report, listlableszs);
}
/// <summary>
/// 报表打印结束后事件
/// </summary>
private void Report_PrintEnd()
{
Model.AL_LablesZS lableszs = new Model.AL_LablesZS(); //定义标签对象
string strSQL = @"UPDATE AL_LablesZS SET PrintUser = @PrintUser,PrintTime = @PrintTime,
PrintCount = PrintCount + 1 WHERE ID = @ID";
lableszs.ID = id;
lableszs.PrintUser = Helper.DapperHelper.username.UserName; //当前用户
lableszs.PrintTime = DateTime.Now;
Helper.DapperHelper.ExecuteWithTrans(strSQL, lableszs);
}
#endregion