# Insert Hatch Example (C#)

This example shows how to insert a Hatch in a drawing document.

//--------------------------------------------------------------
// Preconditions:
// 1. Create a C# Windows console project.
// 2. Copy and paste this example into the C# IDE.
// 3. Add a reference to:
// install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
// 4. Add references to System and System.Windows.Forms.
// 5. Start DraftSight and open a drawing document.
// 6. Start debugging the project.
//
// Postconditions: A Hatch is inserted in the drawing document
// and zoomed to fit.
//----------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using DraftSight.Interop.dsAutomation;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;
namespace AddHatch
{
class Program
{
private static DraftSight.Interop.dsAutomation.Application dsApp;
static void Main(string[] args)
{
//Connect to DraftSight application
dsApp = ConnectToDraftSight();
if (null == dsApp)
{
return;
}
dsApp.AbortRunningCommand(); // abort any command currently running in DraftSight to avoid nested commands
//Get active document
Document dsDoc = dsApp.GetActiveDocument();
if (null == dsDoc)
{
MessageBox.Show("There are no open documents in DraftSight.");
return;
}
//Get model space
Model dsModel = dsDoc.GetModel();
//Get Sketch Manager
SketchManager dsSketchMgr = dsModel.GetSketchManager();
//Hatch parameters
int[] boundaryPointCountArray = new int[] { 4 };
double[] boundaryPoints = new double[]
{
0, 0,
2, 0,
2, 2,
0, 2,
};
string patternName = "ANSI31";
double patternScale = 1.0;
double patternAngle = Math.PI / 4; // In radians
//Insert Hatch
Hatch dsHatch = dsSketchMgr.InsertHatchByBoundary(boundaryPointCountArray, boundaryPoints, patternName, patternScale, patternAngle);
if (null != dsHatch)
{
//Change color of Hatch
Color dsColor = dsHatch.Color;
dsColor.SetNamedColor(dsNamedColor_e.dsNamedColor_Green);
dsHatch.Color = dsColor;
//Zoom to fit
dsApp.Zoom(dsZoomRange_e.dsZoomRange_Fit, null, null);
}
else
{
MessageBox.Show("Hatch entity was not added to the current drawing.");
}
}
private static DraftSight.Interop.dsAutomation.Application ConnectToDraftSight()
{
DraftSight.Interop.dsAutomation.Application dsApp = null;
try
{
//Connect to DraftSight
dsApp = (DraftSight.Interop.dsAutomation.Application)Marshal.GetActiveObject("DraftSight.Application");
}
catch (Exception ex)
{
MessageBox.Show("Failed to connect to DraftSight. Cause: " + ex.Message);
dsApp = null;
}
return dsApp;
}
}
}