Last week, i was to do some simple map printing of an ArcGIS Server application, the first thing i thought of is Layout view of the map, why this approach won't do the job for me ??
the reason is that im calling SOAP API operation which are stateless operations and it won't effect the Mapservice so there is no way to get that done.
as a start i thought i will take the map image put and put it in another aspx and print it along with the legned that im generating dynamically.
in my application users don't want to display the whole legend, they want to display the legend of some specific layers.
one issue thta i faced in getting the Map Image is that i have 3 rourceitems
1- Graphics Layer
2- non-Cahced Service
3- Cached Service
getting the image the normal would get only the non-chached service image, but found a way to get the image from all the resources for printing.
soon i'll pasting the code with some screenshots.
stay tuned
UPDATE:create a sub folder in ur project directory or anywhere you want and call it "tmp". the "tmp" folder will be used to save the generated image.
you an extra page lets call it PrintPage.aspx
<%@ Page language="c#" Inherits="Printing.PrintPage" CodeFile="PrintPage.aspx.cs" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>PrintPage</title>
<style type="text/css">
</style>
</head>
<body style="margin:0 0 0 0">
<form id="Form1" method="post" runat="server">
<table border="0" width="100%" align="center">
<tr>
<td style="width: 671px" align="left"><img src="GenerateImage.aspx" id="MapImage" Width="671" Height="606" runat="server" style="border-right: black 1px solid; border-top: black 1px solid; border-left: black 1px solid; border-bottom: black 1px solid" /></td>
<td valign="top" align="left">
<asp:GridView id="GVLegend" runat="server" Width="129px" Height="63px" GridLines="Horizontal" EmptyDataText="No Legend" AutoGenerateColumns="False">
<Columns>
<asp:ImageField DataImageUrlField="LegendImage">
<ItemStyle Height="40px" Width="30px" />
</asp:ImageField>
<asp:BoundField DataField="LegendName" >
<ItemStyle Font-Size="Smaller" />
</asp:BoundField>
</Columns>
</asp:GridView>
</td>
</tr>
</table>
</form>
</body>
</html>
the code behind PrintPage.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using ESRI.ArcGIS.ADF.Web;
namespace Printing
{
public partial class PrintPage : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e)
{
MapImage.Src = Session["MapImageURL"].ToString();
}
}
}
in you default.aspx add a button that causes a callback to this function
public void PrintMap()
{
string MapImageURL = GISFunctions.ExportMapImage(Map1, Page.Request.PhysicalApplicationPath + @"tmp\");
Session["MapImageURL"] = "tmp/" + MapImageURL;
Map1.CallbackResults.Add(GeneralUtilities.Utilities.GetCallBack(null,null,"javascript","window.open('" + "PrintPage.aspx', 'PrintWindow', 'dependent=yes ,width=800, height=500, status=no, toolbar=no, menubar=yes, location=no, resizable=yes, scrollbars=yes');"));
mapstring = Map1.CallbackResults.ToString();
}
the ExportMapImage function code
public static string ExportMapImage(ESRI.ArcGIS.ADF.Web.UI.WebControls.Map ADFMap, string OutputPath)
{
System.Collections.Generic.List<System.Drawing.Image> bitmaps = new System.Collections.Generic.List<System.Drawing.Image>();
foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mf in ADFMap.GetFunctionalities())
{
if (mf != null)
{
ESRI.ArcGIS.ADF.Web.MapImage mapImage = mf.DrawExtent(ADFMap.Extent);
mapImage = mf.DrawExtent(ADFMap.Extent);
if (mapImage == null)
continue;
if (mapImage.GetImage() != null)
{
bitmaps.Add(mapImage.GetImage());
}
}
}
System.Drawing.Bitmap newImg = new System.Drawing.Bitmap(Convert.ToInt16(ADFMap.Width.Value), Convert.ToInt16(ADFMap.Height.Value));
System.Drawing.Graphics imgGraphics = System.Drawing.Graphics.FromImage(newImg);
int i = bitmaps.Count - 1;
while (i >= 0)
{
imgGraphics.DrawImage(bitmaps[i], 0, 0, Convert.ToInt16(ADFMap.Width.Value), Convert.ToInt16(ADFMap.Height.Value));
i += -1;
}
long Ticks = DateTime.Now.Ticks;
string ImagePath = OutputPath + "mapimage" + Ticks + ".jpg";
newImg.Save(ImagePath, System.Drawing.Imaging.ImageFormat.Jpeg);
return "mapimage" + Ticks + ".jpg";
}
in the same way, you can add the legend next to the map, the reason why i didn't add it in code in the im displaying the legend based on different criterias which i didn't want to confuse others including it my code, but still if u need to know how to generate the legend, can can mail me.
