Populate OptionSet value from MS CRM 2011 into DropDownList in ASP.NET

We had a requirement to create CRM record from custom ASP.NET page. There was an OptionSet on CRM Form which we need to display the option value in DropDownList of ASP.NET page. Below is the sample code to populate OptionSet value into DropDownList.

// Create Dictionary object to store the OptonSet value.
Dictionary<int, string> dropDownSource = new Dictionary<int, string>();

// Create Retrieve reuest
RetrieveAttributeRequest optionSetRequest = new RetrieveAttributeRequest();
optionSetRequest.EntityLogicalName = “lead”;
optionSetRequest.LogicalName = “leadqualitycode”;
optionSetRequest.RetrieveAsIfPublished = true;

RetrieveAttributeResponse optionSetResponse = (RetrieveAttributeResponse)service.Execute(optionSetRequest);

// Access retrive metadata

PicklistAttributeMetadata retrieveOptionSetMetadata = (PicklistAttributeMetadata)optionSetResponse.AttributeMetadata;

//get current optionlist for attribute

OptionMetadata[] optionList = retrieveOptionSetMetadata.OptionSet.Options.ToArray();

foreach (OptionMetadata o in optionList)
dropDownSource.Add(int.Parse(o.Value.ToString()), o.Label.UserLocalizedLabel.Label.ToString());

// ddlRating is object of dropdownlist
ddlRating.DataSource = dropDownSource;

Author: Arvind Singh

Microsoft Dynamics CRM Consultant

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