📄 tdataset_datasetfield.htm
字号:
<html>
<head>
<title></title>
</head>
<!--#include virtual="/inc/header.php"-->
<table width="100%" border="0" cellspacing="0" cellpadding="2" bgcolor="#FFFFFF">
<tr>
<td align="left">
<span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>TDataSet.DataSetField
<br>
</b><span style="font-family:Helv; font-size:9pt; color:#000000"><span style="font-family:Helv; font-size:9pt; color:#7F0000"><a href=tdataset.htm>TDataSet</a></span></span><span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>
<br>
</b></span></span>
</td>
<td align="right">
<font face="Arial" size="2">
<a href="overview.htm">Top</a>
</font>
</td>
</tr>
</table>
<br><br>
<span style="font-family:Helvetica,Arial; font-size:10pt; color:#000000">Indicates the persistent TDataSetField object that owns the nested dataset.
<br>
<br>
<b>property</b> DataSetField: TDataSetField;
<br>
<br>
<b>Description</b>
<br>
Use DataSetField when the dataset is the nested detail set of another dataset, such as an Oracle8 nested dataset. Read DataSetField to access the data set field component in the master dataset that comprises this dataset. Set DataSetField to a field component in the master dataset to assign this dataset as the value of that field component.
<br>
<br>
<b>Note:</b> When setting the DataSetField property, the dataset must be of (or a descendant of) the class specified by the master dataset's NestedDataSetClass property. Otherwise, setting DataSetField raises an exception. Further, setting DataSetField to a TDataSetField that is contained in the same dataset raises an exception (A dataset can't be nested in itself).
<br>
</span>
<!--#include virtual="/inc/footer.php"-->
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -