private void PictureMarkerMenuItem_Click(object sender, EventArgs e)
{
string jsonString = @"{
""type"" : ""esriPMS"",
""url"" : ""http://static.arcgis.com/images/Symbols/Basic/GreenStickpin.png"",
""contentType"" : ""image/png"",
""color"" : null,
""width"" : 28,
""height"" : 28,
""angle"" : 0,
""xoffset"" : 0,
""yoffset"" : 0
}
";
UseSymbol(jsonString);
}