C#

cityImage = new Bitmap(belFile);           // Load image<br />
 Graphics graphics = Graphics.FromImage(cityImage);  // create graphics from image<br />
 graphics.DrawEllipse(Pens.Red, tX - 1, tY - 1, 2, 2); // some draw<br />
 this.pb_cont.Image = cityImage;   // assign new image to picture box

Graphics graphics = pb_cont.CreateGraphics();<br />
graphics.DrawRectangle(Pens.Black, rX, rY, dX, dY);

System.InvalidOperationException: There was an error generating the XML document. ---> System.InvalidCastException: Unable to cast object of type 'SummaryDataclass[]' to type 'System.Collections.Generic.List`1[Service+SummaryDataclass]'.
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write5_ArrayOfSummaryDataclass(Object o)
   at Microsoft.Xml.Serialization.GeneratedAssembly.ListOfSummaryDataclassSerializer1.Serialize(Object objectToSerialize, XmlSerializationWriter writer)
   at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
   --- End of inner exception stack trace ---

    [WebMethod]<br />
    public SummaryDataclass[] GetSummaryDataBeta(string SearchTerm)<br />
    {<br />
        SummaryDataclass[] summaries = null;<br />
  <br />
// i split the terms up, and get a database connection here<br />
<br />
             summaries = new SummaryDataclass[ds.Tables[0].Rows.Count + SplitSearchTerms.Length]; //  make it the correct size  <br />
<br />
<br />
            // do the loop<br />
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)<br />
            {<br />
                summaries[i] = new SummaryDataclass();<br />
                summaries[i].Item = ds.Tables[0].Rows[i]["item"] as string;<br />
                summaries[i].ItemID = (int)ds.Tables[0].Rows[i]["itemid"];<br />
                summaries[i].Count = (int)ds.Tables[0].Rows[i]["tally"];<br />
                summaries[i].Validate = ds.Tables[0].Rows[i]["validation"] as string;<br />
            }<br />
<br />
<br />
<br />
            for (int j = ds.Tables[0].Rows.Count; j < ds.Tables[0].Rows.Count + SplitSearchTerms.Length; j++)<br />
            {<br />
                summaries[j] = new SummaryDataclass();<br />
                summaries[j].Item = SplitSearchTerms[j - ds.Tables[0].Rows.Count];<br />
                summaries[j].ItemID = 0;<br />
                summaries[j].Count = j;<br />
                summaries[j].Validate = "Place " + j.ToString();<br />
            }<br />
           <br />
        }<br />
 return summaries;<br />
<br />
    }

public: delegate void myDelegate1(String^);<br />
<br />
public: delegate void myDelegate2(array<String^>^);<br />
<br />
 <br />
<br />
private: void BasicPolicyMethod()<br />
<br />
{<br />
<br />
String^ str = "Hi";<br />
<br />
array<String^>^ arrstr = gcnew array<String^> {"Hi","Hello"};<br />
<br />
 <br />
<br />
this->Invoke(gcnew myDelegate1(this, &DashBoardForm::myMethod1), str);<br />
<br />
 <br />
<br />
/*Shows error in the next line: "Parameter Count Mismatch"*/<br />
<br />
this->Invoke(gcnew myDelegate2(this, &DashBoardForm::myMethod2), arrstr);<br />
<br />
 <br />
<br />
private: void myMethod1(String^ str)<br />
<br />
{<br />
<br />
/*Do Something here*/<br />
<br />
}<br />
<br />
 <br />
<br />
private: void myMethod2(array<String^>^ arrstr)<br />
<br />
{<br />
<br />
/*Do Something here*/<br />
<br />
<br />
}<br />
<br />
 <br />
<br />