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Create a simple map in WinForm application

Applies to: Nevron Diagram for .NET (Map for .NET)

How to create a simple map in WinForm application from scratch in Visual Studio?

There is no separate VS Toolbox item for the Nevron Map, the Map is part of Nevron Diagram for .NET Enterprise edition. The following getting started guide will help you create a simple Map in Windows Forms application by using Nevron Diagram for .NET Map import functionality.



Create a new WinForm application:
  1. Open Microsoft Visual Studio for .NET
  2. Select the File - New - Project command - the new project dialog will be displayed
  3. Select Visual C# Projects - Windows Applications
    Note: VS 2010 users must switch the target framework to ".NET Framework 4" as by default Windows Forms applications target ".NET Framework 4 Client Profile". This is required, because Nevron Diagram for WinForms uses design time support features that are not present in ".NET Framework 4 Client Profile". To do this right click on the project in Solution Explorer and select properties. On the Application tab go to "Target Framework" and select ".NET Framework 4".
  4. Click the OK button - the designer for Form1 should automatically appear

Insert diagram components and controls

  1. The Nevron .NET Vision installation must register the NDrawingDocument component and NDrawingView control in the Nevron Diagram WinForm toolbox group. In case this group is created go to step 7.
  2. Right click on the Toolbox background. Select the "Choose Items…" command.
  3. In the "Customize Toolbox Items" dialog select the ".NET Framework Components" tab.
  4. Click on the "Browse..." button and select the Nevron.Diagram.WinForm.dll assembly located in the Nevron .NET Vision installation directory.
  5. The NDrawingDocument component should appear at the end of the toolbox Windows Forms list.
  6. Perform the same actions once again, but this time select the Nevron.Diagram.WinForm.dll assembly. As a result the  NDrawingView control should appear at the end of the toolbox Windows Forms list.
  7. Drag and drop the NDrawingDocument to the form - it should appear in the component tray, since it is a component.
  8. Drag and drop the NDrawingView to the form and resize it as you see fit (or set its Dock property to Fill).
  9. Set the Document property of the Drawing View to Drawing Document.
  10. Open the solution explorer and make sure to add references to the following Nevron assemblies: Nevron.Diagram.dll; Nevron.Diagram.WinForm.dll; Nevron.Diagram.Shapes.dll; Nevron.Diagram.Templates.dll; Nevron.System.dll; and Nevron.Presentation.dll;
  11. Double click on Form1 to generate the Form1_Load method.

Programmatically create the map
In the Form1_Load method copy and paste the following code:

[C#]

using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
 
using Nevron.Diagram;
using Nevron.Diagram.Maps;
using Nevron.GraphicsCore;
...
private void Form1_Load(object sender, EventArgs e)
{
    view.ViewLayout = ViewLayout.Fit;
 
    document.Style.FillStyle = new NColorFillStyle(Color.FromArgb(204, 255, 204));
    document.Style.StrokeStyle = new NStrokeStyle(new NLength(0.75f, NGraphicsUnit.Point), Color.FromArgb(119, 119, 119));
    document.RoutingManager.Enabled = false;
    document.BridgeManager.Enabled = false;
    document.Bounds = new NRectangleF(0, 0, 500, 500);
    document.BackgroundStyle.FillStyle = new NColorFillStyle(Color.White);
     
    // Create the map
    NEsriMap m_Map = new NEsriMap();
 
    // create the COUNTRIES shape file
    NEsriShapefile countries = m_Map.Add(SHAPEFILE_NAME);
    countries.NameColumn = "COUNTRY";
    countries.TextColumn = "COUNTRY";
 
    m_Map.Read();
    m_Map.Import(document, document.Bounds);
 
    // make the Map layer the active layer so that the user can select the map shapes
    string layerName = Path.GetFileNameWithoutExtension(SHAPEFILE_NAME);
    NLayer mapLayer = (NLayer)document.Layers.GetChildByName(layerName);
    document.ActiveLayerUniqueId = mapLayer.UniqueId;
 
    // size to visible shapes
    document.SizeToContent(document.AutoBoundsMinSize, document.AutoBoundsPadding);
}
 
// select the map shape file
private const string SHAPEFILE_NAME = @"C:\Maps\southamerica_adm0.shp";

[VB.NET]
Imports System
Imports System.Drawing
Imports System.IO
Imports System.Windows.Forms
 
Imports Nevron.Diagram
Imports Nevron.Diagram.Maps
Imports Nevron.GraphicsCore
...
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
    view.ViewLayout = ViewLayout.Fit
 
    document.Style.FillStyle = New NColorFillStyle(Color.FromArgb(204, 255, 204))
    document.Style.StrokeStyle = New NStrokeStyle(New NLength(0.75F, NGraphicsUnit.Point), Color.FromArgb(119, 119, 119))
    document.RoutingManager.Enabled = False
    document.BridgeManager.Enabled = False
    document.Bounds = New NRectangleF(0, 0, 500, 500)
    document.BackgroundStyle.FillStyle = New NColorFillStyle(Color.White)
 
    ' Create the map
    Dim m_Map As New NEsriMap()
 
    ' create the COUNTRIES shape file
    Dim countries As NEsriShapefile = m_Map.Add(SHAPEFILE_NAME)
    countries.NameColumn = "COUNTRY"
    countries.TextColumn = "COUNTRY"
 
    m_Map.Read()
    m_Map.Import(document, document.Bounds)
 
    ' make the Map layer the active layer so that the user can select the map shapes
    Dim layerName As String = Path.GetFileNameWithoutExtension(SHAPEFILE_NAME)
    Dim mapLayer As NLayer = DirectCast(document.Layers.GetChildByName(layerName), NLayer)
    document.ActiveLayerUniqueId = mapLayer.UniqueId
 
    ' size to visible shapes
    document.SizeToContent(document.AutoBoundsMinSize, document.AutoBoundsPadding)
End Sub
 
' select the map shape file
Private Const SHAPEFILE_NAME As String = "C:\Maps\southamerica_adm0.shp"


Article ID: 154, Created On: 12/2/2010, Modified: 1/11/2011