Indicates whether the value for the parameter can be an empty string.
语法
<ReportParameter>
...
<AllowBlank>...</AllowBlank>
...
</ReportParameter>
Element Characteristics
| Characteristic | Description |
|---|---|
Data type and length |
Boolean |
Default value |
False |
Cardinality |
0-1: Optional element that occurs once or not at all. |
Element Relationships
| Relationship | Element |
|---|---|
Parent element |
|
Child element |
None |
备注
The AllowBlank element is ignored if the value of the sibling DataType element is not String.
请参阅
参考
Report Definition XML Elements
DataType Element (RDL)