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这部分主要提供一些Stimulsoft Reports.Net开发人员在格式化和转换时遇到的常见问题。

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1.怎么在单元之间转换单元的坐标？

使用StiUnit类的ConvertFromHInches和ConvertToHInches方法可实现坐标转换。
示例：

C#

//Converts a value from centimeters to inches
StiUnit unitFrom = new StiCentimetersUnit();
StiUnit unitTo = new StiInchesUnit();
double value = 2.54;
value = unitFrom.ConvertToHInches(value);
value = unitFrom.ConvertFromHInches(value);

VB

'Converts a value from centimeters to inches
Dim UnitFrom As StiUnit = New StiCentimetersUnit()
Dim UnitTo As StiUnit = New StiInchesUnit()
Dim Value As Double = 2.54
Value = UnitFrom.ConvertToHInches(value)
Value = UnitFrom.ConvertFromHInches(value)

2.怎么在报表中转换坐标和尺寸？

所有可以实现IStiUnitConvert接口的类都可以通过使用Convert方法将一个单元中的报表的坐标和尺寸可以转换到另一个单元。 例如：

C#

//Converts coordinates and sizes of a report from the current unit into inches
StiReport report = new StiReport();
StiUnit unitTo = new StiInchesUnit();
report.Convert(report.Unit, unitTo);

VB

'Converts coordinates and sizes of a report from the current unit into inches
Dim Report As StiReport = New StiReport()
Dim UnitTo As StiUnit = New StiInchesUnit()
Report.Convert(Report.Unit, UnitTo)

3.怎么输出一个值来替代DBNull和空值？

You should use text formatting via the TextFormat property. Also you may disable forced conversion of null values using the report ConvertNulls property.
 可以通过TextFormat属性使用文本格式化。你也可以使用报表的ConvertNulls属性来禁用强制空值转换。

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