広範な try catch ブロックを使用します。エラー メッセージは errorMessage という変数に格納され、作成したエラー ログというカスタム エンティティにレコードとして保存されます (finally メソッドでチェックを行い、空でない場合はレコードを作成します)。
try
{
//invoke the web service here
}
catch (System.Net.WebException ex)
{
tracingService.Trace("WebException");
if (errorMessage != null && errorMessage.Length > 0)
errorMessage += "The application terminated with an error.<br />";
else
errorMessage = "The application terminated with an error.<br />";
if (ex.Status == WebExceptionStatus.ProtocolError)
{
errorMessage += "Error Code: " + ((HttpWebResponse)ex.Response).StatusCode;
if (ex.Response != null)
{
using (var errorResponse = (HttpWebResponse)ex.Response)
{
using (var reader = new StreamReader(errorResponse.GetResponseStream()))
{
string error = reader.ReadToEnd();
errorMessage = "Error Message (JSON Format): " + error + "<br />";
}
}
}
}
}
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
{
if (errorMessage != null && errorMessage.Length > 0)
errorMessage += "The application terminated with an error.<br />";
else
errorMessage = "The application terminated with an error.<br />";
errorMessage += "Timestamp: " + ex.Detail.Timestamp + ".<br />";
errorMessage += "Code: " + ex.Detail.ErrorCode + ".<br />";
errorMessage += "Message: " + ex.Detail.Message + ".<br />";
errorMessage += "Inner Fault: " +
(null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault") + ".<br />";
tracingService.Trace("The application terminated with an error.");
tracingService.Trace("Timestamp: {0}", ex.Detail.Timestamp);
tracingService.Trace("Code: {0}", ex.Detail.ErrorCode);
tracingService.Trace("Message: {0}", ex.Detail.Message);
tracingService.Trace("Inner Fault: {0}",
null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
catch (System.TimeoutException ex)
{
if (errorMessage != null && errorMessage.Length > 0)
errorMessage += "The application terminated with an error.<br />";
else
errorMessage = "The application terminated with an error.<br />";
errorMessage += String.Format("Message: {0} <br />", ex.Message);
errorMessage += String.Format("Stack Trace: {0} <br />", ex.StackTrace);
errorMessage += String.Format("Inner Fault: {0} <br />",
null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
tracingService.Trace("The application terminated with an error.");
tracingService.Trace("Message: {0}", ex.Message);
tracingService.Trace("Stack Trace: {0}", ex.StackTrace);
tracingService.Trace("Inner Fault: {0}",
null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
}
catch (System.Exception ex)
{
tracingService.Trace("The application terminated with an error.");
tracingService.Trace(ex.Message);
errorMessage = String.Format("The application terminated with an error.<br />");
errorMessage += String.Format(ex.Message + "<br />");
// Display the details of the inner exception.
if (ex.InnerException != null)
{
tracingService.Trace(ex.InnerException.Message);
FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe = ex.InnerException
as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
if (fe != null)
{
tracingService.Trace("Timestamp: {0}", fe.Detail.Timestamp);
tracingService.Trace("Code: {0}", fe.Detail.ErrorCode);
tracingService.Trace("Message: {0}", fe.Detail.Message);
tracingService.Trace("Trace: {0}", fe.Detail.TraceText);
tracingService.Trace("Inner Fault: {0}",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
errorMessage += String.Format("Timestamp: {0} <br />", fe.Detail.Timestamp);
errorMessage += String.Format("Code: {0} <br />", fe.Detail.ErrorCode);
errorMessage += String.Format("Message: {0} <br />", fe.Detail.Message);
errorMessage += String.Format("Trace: {0} <br />", fe.Detail.TraceText);
errorMessage += String.Format("Inner Fault: {0} <br />",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
}
}