How to use TypedValue array under C# CAD SelectionFilter

Updated: February 22, 2024 16:25:48 Author: Li Jianjun

This article mainly introduces the usage of TypedValue arrays under C# CAD SelectionFilter, which has good reference value. I hope it will be helpful to everyone. If there are any errors or no complete considerations, I hope you will be very encouraged.

How to use TypedValue array

SelectionFilter is a class used to filter AutoCAD entities, in which you can use to select entities with specific attributes.

When constructing a SelectionFilter object, you need to pass in a TypedValue array, which is used to define the selection rules.

In the TypedValue array, each element represents a selection condition, which consists of two parameters: DxfCode and value.

DxfCode is an integer enumeration value used to represent the type of the selection condition, and the value is the corresponding specific attribute value.

Depending on different needs, different TypedValue objects can be defined and combined into an array to implement various custom selection rules.

Commonly used DxfCode enumeration values and their corresponding attribute values

（0）: Select the Start entity
（1）: Select the end entity
（1）: Select the entity that contains the specified text
（2）: Select the entity located in the specified block name
（8）: Select the entity located in the specified layer
（62）: Select the entity of the specified color
（6）: Select the entity located in the specified line type
（48）: Select the entity with the specified linear scale
（370）: Select the entity with the specified line width
（5）: Select the entity with the specified handle
（10）: Select the entity with the specified X coordinate
（20）: Select the entity with the specified Y coordinate
（30）: Select the entity with the specified Z coordinate
（40）: Select the entity with the specified radius
（41）: Select a solid with a specified diameter
（50）: Select the entity with the specified angle
（38）: Select the entity with the specified height
（39）: Select a solid with a specified thickness
（7）: Select the entity that uses the specified text style
（40）: Select an entity with the specified text height
（50）: Select the entity with the specified text rotation angle
（1）: Select the entity containing the specified string
（330）: Select the entity with the specified object ID

// Select the line segment with color 1 (red) and located in layer "Layer1"TypedValue[] values = new TypedValue[] {
    new TypedValue((int), 1),
    new TypedValue((int), "LINE"),
    new TypedValue((int), "Layer1")
};

Below is a sample code

Demonstrate how to select layers named "rights owner" and "prenumbered"

And the entity of type TEXT:

    SelectionFilter innerFilter = new SelectionFilter(new TypedValue[] {
    new TypedValue((int), "&lt;or"),
    new TypedValue((int), "Right holder"),
    new TypedValue((int), "Pre-numbered"),
    new TypedValue((int), "TEXT"),  // Entity type is TEXT    new TypedValue((int), "or"),
    new TypedValue((int), "or"),
});
    // Use polygon window selection method to let the user select the entity located within the external polyline    PromptSelectionResult innerSelRes = (outerPoints, innerFilter);

Summarize

The above is personal experience. I hope you can give you a reference and I hope you can support me more.

C#
CAD
SelectionFilter
TypedValue

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How to use TypedValue array under C# CAD SelectionFilter