How to call a Web Service from Plugin in Dynamics CRM
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Introduction:
In this blog, we will have a look on how a web service can be call from Plugin in Dynamics CRM.
Steps to be followed:
1) Create an entity “Product Configuration” which consists of 2 fields
- Key – Name of the Web Service
- Value – Web Service URL
The basic purpose of this entity is to store the Web Service URL so that we don’t hard code the values in the code.
Web Service URL-
Where WorkOrder -> Controller Name and CreateWorkOrder -> Function Name
2) Call the below function to call the Web Service. Retrieve Product Configuration function basically retrieves the record from CRM.
private void CallWebService(IPluginExecutionContext context, ITracingService tracer, IOrganizationService service)
{
string licenseResposeJSON = string.Empty;
////// Retrieve Product Configuration details: URL
tracer.Trace("Retrieve Product Configuration details: URL");
string value = string.Empty;
value = this.RetrieveProductConfiguration(service);
tracer.Trace("Downloading the target URI from Product Configuration: " + value);
if (value != string.Empty)
{
try
{
using (WebClientEx client = new WebClientEx())
{
tracer.Trace("Call Web Service");
client.Timeout = 60000;
client.Headers.Add(HttpRequestHeader.ContentType, "application/json");
licenseResposeJSON = client.UploadString(value.ToString(), "1");
}
tracer.Trace(licenseResposeJSON);
context.OutputParameters["WebServieCall"] = licenseResposeJSON;
tracer.Trace("Output Parameter is set: " + licenseResposeJSON);
}
catch (WebException exception)
{
string str = string.Empty;
if (exception.Response != null)
{
using (StreamReader reader =
new StreamReader(exception.Response.GetResponseStream()))
{
str = reader.ReadToEnd();
}
exception.Response.Close();
}
if (exception.Status == WebExceptionStatus.Timeout)
{
throw new InvalidPluginExecutionException(
"The timeout elapsed while attempting to issue the request.", exception);
}
throw new InvalidPluginExecutionException(string.Format(CultureInfo.InvariantCulture, "A Web exception occurred while attempting to issue the request. {0}: {1}", exception.Message, str), exception);
}
}
}
public class WebClientEx : WebClient
{
public int Timeout { get; set; }
protected override WebRequest GetWebRequest(Uri address)
{
var request = base.GetWebRequest(address);
request.Timeout = Timeout;
return request;
}
}
3) Web Service which calls Create WorkOrder function is given below:
[HttpPost]
public async Task CreateWorkOrder([FromBody]string value)
{
CRM_DataOperations operations = new CRM_DataOperations();
OperationResult result = await Task.Run(() => operations.CreateWorkOrder_Daily());
return Request.CreateResponse(HttpStatusCode.Created, "Message: " + Enum.GetName(result.GetType(), result));
}
Hope you find this helpful! Thank you.
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