关于添加图层label的问题！

<P>我写了一下代码可以实现某图层的label为该图层的Code字段的内容：</P>
<P>Dim pAnnProCol As IAnnotateLayerPropertiesCollection
Dim pLabelEngin As ILabelEngineLayerProperties
pAnnProCol = pGFeatureLayer.AnnotationProperties</P>
<P>Dim pBasicOverposterLayerProps As IBasicOverposterLayerProperties
pBasicOverposterLayerProps = New BasicOverposterLayerProperties()
pBasicOverposterLayerProps.NumLabelsOption = esriBasicNumLabelsOption.esriOneLabelPerShape</P>
<P>For i = 0 To pAnnProCol.Count - 1
    pAnnProCol.QueryItem(i, pLabelEngin)
    pLabelEngin.Expression = "[Code]" </P>
<P>    pLabelEngin.Symbol = pTextSymbol
    pLabelEngin.BasicOverposterLayerProperties = pBasicOverposterLayerProps
Next i</P>
<P>Dim pCon As ITrackCancel
pCon = New CancelTracker()
pCon.Continue()
pGFeatureLayer.Draw(esriDrawPhase.esriDPAnnotation, pMapControl.ActiveView.ScreenDisplay, pCon)</P>
<P>可是我想用该图层的Name和Code字段的内容一起做label，于是我用下面的代码：</P>
<P>pLabelEngin.Expression = "[Name]" ; "[Code]"就不行！我用以下的代码也都不行，做过的指条路吧！</P>
<P>pLabelEngin.Expression = "代码是：" ; "[Code]"</P>
<P> <img src="images/post/smile/dvbbs/em12.gif" /><img src="images/post/smile/dvbbs/em11.gif" /></P>

关注

<P>嗯，在ArcMap里是用你说的方法，mapcontrol里应该也可以，呵呵！</P><P>我每次要实现功能就先去ArcMap中试试，可以的话MapControl里肯定可以实现只要你想办法，呵呵！</P><img src="images/post/smile/dvbbs/em01.gif" />

<P>也就是在geodatabase里建立featureclass，导入纯属性表，然后关联，就可以，yeah？在mapcontrol中应该一样吧</P>

<P>可能不能用Relate的纯属性表的字段吧，反正在ArcMap里不行！</P>
<P>可以用Relate的FeatureClass的字段，只需要在字段名字前加上relate的表的名字！我只是在ArcMap里设了，反正可以，没有编代码，呵呵！</P>

关联（relate）外部表的字段来label，如何写<img src="images/post/smile/dvbbs/em02.gif" />

<P>我想得到的字符串是“[NAME] ; "(" ; [CODE] ; "'"”</P><P>可以用这个实现：pLabelEngin.Expression ="[HD_Name] ; " ; """(""" ; " ; [Code] ; " ; """)"""</P><P>真是麻烦呢！</P><img src="images/post/smile/dvbbs/em08.gif" />

<P>Thanks！</P><P>希望有机会多交流！</P><P>还有要注意的是：</P><P>pLabelEngin.Expression = "代码是：" ; "[Code]"</P><P>change t</P><P>pLabelEngin.Expression = <FONT color=#f73809>"""代码是：""" ; "[Code]"</FONT></P>

哎呀，行家一出手就知道有没有，对了，多谢kisssy版主，多谢多谢！（鞠躬！）<img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em04.gif" />

<P>To lilysunny:</P><P>Try this one:</P><P>pLabelEngin.Expression = "[Name]<FONT color=#f70909>;</FONT>" ; "[Code]"</P><P>It will run correctly! </P><P>Cause you should write the Expression correctly！</P><P>Goodluck！</P>