2009年5月15日
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The sample code provided is to programmatically change a layer's data source in ArcMap.[代码] 阅读全文
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Get Unique ValuesDescription:The code below demonstrates how to find the unique values stored within a database field by using the SQL DISTINCT function.Previous to version 8.1, the QueryDef object d... 阅读全文
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SummaryTo use an IQueryDef with an IFeatureCursor, you assign a name to the QueryDef using IFeatureContainer and use this name like a feature class name.ProcedureThe following code connects to a geo... 阅读全文
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Get Oracle Sequence ValueDescription:The code below shows how to get a value from an Oracle database sequence. You would typically do this in order to set a field value to a number that was unique d... 阅读全文
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SummaryThis article contains an ArcObjects code sample that demonstrates how to split a polyline at the vertices, creating separate lines from each line segment.Procedure Start ArcMap. Create a new UI... 阅读全文
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SummaryIn ArcMap you can zoom to the selected features for a layer by right-clicking the layer and selecting Selection > Zoom to Selected Features. This article shows how to do this task using VBA ... 阅读全文
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Procedure Start ArcMap. Create a new UIButtonControl. Right-click the UIButtonControl and select View Source. Copy below code into the UIButtonControl's click event. [代码] Modify the value of strPathNa... 阅读全文
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IFDOToADOConnection接口(DataSourcesOleDB) 能够通过workspace从而创建或者连接到一个ADO connection. 它有2个方法，如下所示： Description Connect Connects a Workspace object to an ADO connection object. CreateADOConnection Creates an... 阅读全文
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The sample below shows how to get source sde database type of layer. It uses IDataLayer2 and IDatabaseConnectionInfo2 interface. IDataLayer2 : Provides access to additional members that control the da... 阅读全文
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（从网上转的，对内容作了一些修改）1. 实现相应的接口 创建一个ActiveX DLL的工程，并在工程下添加一个新的类（以ArcGISCommand为例）。ArcGIS桌面平台通过接口来识别不同的组件是否可以合法的嵌入到平台 中。想要实现一个ArcObjects的嵌入式按钮，我们需要至少需要实现ICommand接口。故在ArcGISCommand中我们首先需要输入以下 代码：Implements ... 阅读全文