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Print and Export in ASP.NET Core Maps control

15 Oct 2021 / 2 minutes to read

Print

The rendered Maps can be printed directly from the browser by calling the print method. To use the print functionality, set the AllowPrint property to ”true“.

tagHelper
print.cs
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@using Syncfusion.EJ2;
<div id="map">
    <button id="export">Export</button>
    <ejs-maps id="maps" load="onMapLoad"  allowPrint="true">
        <e-maps-layers>
        <e-maps-layer shapeData="ViewBag.MapsData">
        </e-maps-layer>
        </e-maps-layers>
    </ejs-maps>
</div>

<script>
    function onMapLoad(args) {
        window.maps = args.maps;
    }
    window.onload = function () {
        document.getElementById("export").onclick = () => {
            window.maps.print();
        };
    };
</script>
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            ViewBag.ShapeData = this.GetWorldMap();
            return View();
        }     
        public object GetWorldMap()
        {
            string allText = System.IO.File.ReadAllText("./wwwroot/scripts/MapsData/world_map.js");
            return JsonConvert.DeserializeObject(allText);
        }   
    }
}

Print

Export

Image Export

To use the image export functionality in Maps, set the AllowImageExport property to true. The rendered map can be exported as an image using the export method. This method requires two parameters: image type and file name. The Maps can be exported as an image in the following formats.

  • JPEG
  • PNG
  • SVG
tagHelper
export.cs
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@using Syncfusion.EJ2;
<div id="map">
    <button id="export">Export</button>
    <ejs-maps id="maps" load="onMapLoad"  allowImageExport="true">
        <e-maps-layers>
        <e-maps-layer shapeData="ViewBag.MapsData">
        </e-maps-layer>
        </e-maps-layers>
    </ejs-maps>
</div>

<script>
    function onMapLoad(args) {
        window.maps = args.maps;
    }
    window.onload = function () {
        document.getElementById("export").onclick = () => {
            window.maps.export('PNG', 'Maps');
        };
    };
</script>
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            ViewBag.ShapeData = this.GetWorldMap();
            return View();
        }     
        public object GetWorldMap()
        {
            string allText = System.IO.File.ReadAllText("./wwwroot/scripts/MapsData/world_map.js");
            return JsonConvert.DeserializeObject(allText);
        }   
    }
}

Image export

Exporting Maps as base 64 string of the file

The image can be exported as base64 string for the JPEG and PNG formats. The rendered Maps can be exported to image as a base64 string using the export method. There are four parameters required: image type, file name, orientation of the exported PDF document which must be set as null for image export and finally allowDownload which should be set as false to return base64 string.

tagHelper
export.cs
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@using Syncfusion.EJ2;
<div id="map">
    <button id="export">Export</button>
    <ejs-maps id="maps" load="onMapLoad"  allowImageExport="true">
        <e-maps-layers>
        <e-maps-layer shapeData="ViewBag.MapsData">
        </e-maps-layer>
        </e-maps-layers>
    </ejs-maps>
    <div id="data"></div>
</div>

<script>
    function onMapLoad(args) {
        window.maps = args.maps;
    }
    window.onload = function () {
        document.getElementById("export").onclick = () => {
            window.maps.export('JPEG', 'Maps', null, false).then((data) => {
                document.getElementById('data').innerHTML = data;
        });
        };
    };
</script>
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            ViewBag.ShapeData = this.GetWorldMap();
            return View();
        }     
        public object GetWorldMap()
        {
            string allText = System.IO.File.ReadAllText("./wwwroot/scripts/MapsData/world_map.js");
            return JsonConvert.DeserializeObject(allText);
        }   
    }
}

PDF Export

To use the PDF export functionality, set the AllowPdfExport property to true. The rendered Maps can be exported as PDF using the export method. The export method requires three parameters: file type, file name and orientation of the PDF document. The orientation setting is optional and 0 indicates portrait and 1 indicates landscape.

tagHelper
export.cs
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@using Syncfusion.EJ2;
<div id="map">
    <button id="export">Export</button>
    <ejs-maps id="maps" load="onMapLoad"  allowPdfExport="true">
        <e-maps-layers>
        <e-maps-layer shapeData="ViewBag.MapsData">
        </e-maps-layer>
        </e-maps-layers>
    </ejs-maps>
</div>

<script>
    function onMapLoad(args) {
        window.maps = args.maps;
    }
    window.onload = function () {
        document.getElementById("export").onclick = () => {
            window.maps.export('PDF', 'Maps', 0);
        };
    };
</script>
Copied to clipboard
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            ViewBag.ShapeData = this.WorldMap();
            return View();
        }     
        public object GetWorldMap()
        {
            string allText = System.IO.File.ReadAllText("./wwwroot/scripts/MapsData/world_map.js");
            return JsonConvert.DeserializeObject(allText);
        }   
    }
}

PDF export

Export the tile Maps

The rendered Maps with providers such as OSM, Bing and Google static Maps can be exported using the export method. It supports the following export formats.

  • JPEG
  • PNG
  • PDF
tagHelper
export-tile.cs
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@using Syncfusion.EJ2;
<div id="map">
    <button id="export">Export</button>
    <ejs-maps id="maps" load="onMapLoad"  allowImageExport="true">
        <e-maps-layers>
        <e-maps-layer layerType="@Syncfusion.EJ2.Maps.ShapeLayerType.OSM">
        </e-maps-layer>
        </e-maps-layers>
    </ejs-maps>
</div>

<script>
    function onMapLoad(args) {
        window.maps = args.maps;
    }
    window.onload = function () {
        document.getElementById("export").onclick = () => {
            window.maps.export('PNG', 'Maps');
        };
    };
</script>
Copied to clipboard
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using EJ2_Core_Application.Models;
using Newtonsoft.Json;

namespace EJ2_Core_Application.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            ViewBag.shapeData = this.GetWorldMap();
            return View();
        }     
        public object GetWorldMap()
        {
            string allText = System.IO.File.ReadAllText("./wwwroot/scripts/MapsData/world_map.js");
            return JsonConvert.DeserializeObject(allText);
        }   
    }
}

Tile export