FastReport报表使用代码C#
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using System;
using System.Data;
using ponentModel;
using FastReport;
namespace cx
{
///
/// Summary description for FrxDataSet.
///
public class FrxDataTable : DataTable
{
private int nItem;
TfrxUserDataSetClass m_ds;
private DataTable m_ChildTable;
public new string TableName
{
get { return m_; }
}
public IfrxDataSet FrxTable
{
get { return m_ds as IfrxDataSet; }
}
private void constructor(string name)
{
m_ChildTable = null;
m_ds = new TfrxUserDataSetClass();
m_ds.OnCheckEOF += new
IfrxUserDataSetEvents_OnCheckEOFEventHandler(OnCheckEOFEventHandler); m_ds.OnGetValue += new
IfrxUserDataSetEvents_OnGetValueEventHandler(OnGetValueHandler);
m_ds.OnFirst += new
IfrxUserDataSetEvents_OnFirstEventHandler(OnFirstEventHandler);
m_ds.OnNext += new
IfrxUserDataSetEvents_OnNextEventHandler(OnNextEventHandler);
m_ds.OnPrior += new
IfrxUserDataSetEvents_OnPriorEventHandler(OnPriorEventHandler);
m_ = name;
DataColumnCollection cols = Columns;
cols.CollectionChanged += new CollectionChangeEventHandler(ColumnsCollection_Changed);
}
public FrxDataTable(string name)
{
constructor(name);
}
public FrxDataTable(DataTable t)
{
constructor(t.TableName);
string FieldNames = null;
foreach (DataColumn col in t.Columns) FieldNames += col.Caption + "\n"; m_ds.Fields = FieldNames;
m_ChildTable = t;
}
///
/// Assigns table to report
///
public void AssignToDataBand(string BandName, TfrxReportClass report)
{
IfrxComponent frx_component;
((IfrxComponent)report).FindObject(BandName, out frx_component);
((IfrxDataBand)frx_component).DataSet = (IfrxDataSet)m_ds;
}
///
/// Assigns table to report
///
public void AssignToReport(bool Enable, TfrxReportClass report)
{
report.SelectDataset(Enable, m_ds);
}
///
/// On First event handler
///
private void OnFirstEventHandler()
{
nItem = 0;
}
///
/// On Next event handler
///
private void OnNextEventHandler()
{
nItem++;
}
///
/// On Prior evene handler
///
private void OnPriorEventHandler()
{
nItem--;
}
///
/// On check EndOfFile event handler
///
private void OnCheckEOFEventHandler(out bool eof)
{
if (m_ChildTable == null)
{
eof = (nItem >= Rows.Count);
}
else
{
eof = (nItem >= m_ChildTable.Rows.Count);
}
}
///
/// On get value handler
///
private void OnGetValueHandler(object VarName, out object Val) {
if (m_ChildTable == null)
{
Val = Rows[nItem][VarName.ToString()];
}
else
{
Val = m_ChildTable.Rows[nItem][VarName.ToString()];
}
// FastReport does not know about System.Decimal object type
// so convert it to Integer
if (Val is Decimal)
{
Val = Decimal.ToInt32((Decimal)Val);
}
}