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    <p>Update....I replicated the basic code, no database, simple and it seems to work fine, so I suspect there is another reason, I will rest on it over the weekend....</p> <p>Here is the replicated server code -</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services; using System.IO; namespace TestWS { /// &lt;summary&gt; /// Summary description for Service1 /// &lt;/summary&gt; [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. // [System.Web.Script.Services.ScriptService] public class Service1 : System.Web.Services.WebService { private string GetFileName () { if (File.Exists("index.dat")) { using (StreamReader lReader = new StreamReader("index.dat")) { return lReader.ReadLine(); } } else { using (StreamWriter lWriter = new StreamWriter("index.dat")) { string lFileName = Path.GetRandomFileName(); lWriter.Write(lFileName); return lFileName; } } } [WebMethod] public string WriteChunk(byte[] aData) { Directory.SetCurrentDirectory(Server.MapPath("Data")); DateTime lStart = DateTime.Now; using (FileStream lStream = new FileStream(GetFileName(), FileMode.Append)) { BinaryWriter lWriter = new BinaryWriter(lStream); lWriter.Write(aData); } DateTime lEnd = DateTime.Now; return lEnd.Subtract(lStart).TotalMilliseconds.ToString(); } } </code></pre> <p>}</p> <p>And the replicated client code -</p> <pre><code> static void Main(string[] args) { Service1 s = new Service1(); byte[] b = new byte[1024 * 512]; for ( int i = 0 ; i &lt; 160 ; i ++ ) { Console.WriteLine(s.WriteChunk(b)); } } </code></pre>
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    1. POFile IO slow or cached in a web service?
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    1. COI think it might be VisualStudio, running the client in the debugger, and web service detached seems fast, running the opposite way round is slow i.e. debug web service, client detached! This makes sense sort of, VisualStudio trying to intercept everything...no convinced yet.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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