The other day I showed you how to create new attributes using the SDK here:
http://mileyja.blogspot.com/2011/05/how-to-add-attribute-to-entity-using.html
Now, here is a quick demo on how to utilize the DeleteAttribute message of the CRM 2011 Organization service in both C# and Jscript. This illustration shows you how to delete an attribute to an entity using SOAP (JScript) or C# (.NET) with the CreateAttribute message. Now this message could fail if the attribute is currently on an entity form, so you will want to make sure you remove it from your entity forms first.
To understand how to parse the response please review my post on using the DOM parser.
http://mileyja.blogspot.com/2011/05/how-to-add-attribute-to-entity-using.html
Now, here is a quick demo on how to utilize the DeleteAttribute message of the CRM 2011 Organization service in both C# and Jscript. This illustration shows you how to delete an attribute to an entity using SOAP (JScript) or C# (.NET) with the CreateAttribute message. Now this message could fail if the attribute is currently on an entity form, so you will want to make sure you remove it from your entity forms first.
First in C#:
StringAttributeMetadata stringAttribute = new StringAttributeMetadata
{
// Set base properties
SchemaName = "new_string",
DisplayName = new Label("Sample String", _languageCode),
RequiredLevel = new AttributeRequiredLevelManagedProperty(AttributeRequiredLevel.None),
Description = new Label("String Attribute", _languageCode),
// Set extended properties
MaxLength = 100
};
// Create the request.
DeleteAttributeRequest deleteAttributeRequest = new DeleteAttributeRequest
{
EntityLogicalName = Contact.EntityLogicalName,
LogicalName = stringAttribute.SchemaName
};
// Execute the request.
service.Execute(deleteAttributeRequest);
Now here is the Jscript nicely formatted by the CRM 2011 SOAP formatter. Available at: http://crm2011soap.codeplex.com/
Now in Jscript:
Now in Jscript:
function runme()
{
SDK.SAMPLES.DeleteAttributeRequest();
}
if (typeof (SDK) == "undefined")
{ SDK = { __namespace: true }; }
//This will establish a more unique namespace for functions in this library. This will reduce the
// potential for functions to be overwritten due to a duplicate name when the library is loaded.
SDK.SAMPLES = {
_getServerUrl: function () {
///<summary>
/// Returns the URL for the SOAP endpoint using the context information available in the form
/// or HTML Web resource.
///</summary>
var OrgServicePath = "/XRMServices/2011/Organization.svc/web";
var serverUrl = "";
if (typeof GetGlobalContext == "function") {
var context = GetGlobalContext();
serverUrl = context.getServerUrl();
}
else {
if (typeof Xrm.Page.context == "object") {
serverUrl = Xrm.Page.context.getServerUrl();
}
else
{ throw new Error("Unable to access the server URL"); }
}
if (serverUrl.match(/\/$/)) {
serverUrl = serverUrl.substring(0, serverUrl.length - 1);
}
return serverUrl + OrgServicePath;
},
DeleteAttributeRequest: function () {
var requestMain = ""
requestMain += "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">";
requestMain += " <s:Body>";
requestMain += " <Execute xmlns=\"http://schemas.microsoft.com/xrm/2011/Contracts/Services\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">";
requestMain += " <request i:type=\"a:DeleteAttributeRequest\" xmlns:a=\"http://schemas.microsoft.com/xrm/2011/Contracts\">";
requestMain += " <a:Parameters xmlns:b=\"http://schemas.datacontract.org/2004/07/System.Collections.Generic\">";
requestMain += " <a:KeyValuePairOfstringanyType>";
requestMain += " <b:key>LogicalName</b:key>";
requestMain += " <b:value i:type=\"c:string\" xmlns:c=\"http://www.w3.org/2001/XMLSchema\">new_string</b:value>";
requestMain += " </a:KeyValuePairOfstringanyType>";
requestMain += " <a:KeyValuePairOfstringanyType>";
requestMain += " <b:key>EntityLogicalName</b:key>";
requestMain += " <b:value i:type=\"c:string\" xmlns:c=\"http://www.w3.org/2001/XMLSchema\">contact</b:value>";
requestMain += " </a:KeyValuePairOfstringanyType>";
requestMain += " </a:Parameters>";
requestMain += " <a:RequestId i:nil=\"true\" />";
requestMain += " <a:RequestName>DeleteAttribute</a:RequestName>";
requestMain += " </request>";
requestMain += " </Execute>";
requestMain += " </s:Body>";
requestMain += "</s:Envelope>";
var req = new XMLHttpRequest();
req.open("POST", SDK.SAMPLES._getServerUrl(), true)
// Responses will return XML. It isn't possible to return JSON.
req.setRequestHeader("Accept", "application/xml, text/xml, */*");
req.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
req.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/xrm/2011/Contracts/Services/IOrganizationService/Execute");
var successCallback = null;
var errorCallback = null;
req.onreadystatechange = function () { SDK.SAMPLES.DeleteAttributeResponse(req, successCallback, errorCallback); };
req.send(requestMain);
},
DeleteAttributeResponse: function (req, successCallback, errorCallback) {
///<summary>
/// Recieves the assign response
///</summary>
///<param name="req" Type="XMLHttpRequest">
/// The XMLHttpRequest response
///</param>
///<param name="successCallback" Type="Function">
/// The function to perform when an successfult response is returned.
/// For this message no data is returned so a success callback is not really necessary.
///</param>
///<param name="errorCallback" Type="Function">
/// The function to perform when an error is returned.
/// This function accepts a JScript error returned by the _getError function
///</param>
if (req.readyState == 4) {
if (req.status == 200) {
if (successCallback != null)
{ successCallback(); }
}
else {
errorCallback(SDK.SAMPLES._getError(req.responseXML));
}
}
},
_getError: function (faultXml) {
///<summary>
/// Parses the WCF fault returned in the event of an error.
///</summary>
///<param name="faultXml" Type="XML">
/// The responseXML property of the XMLHttpRequest response.
///</param>
var errorMessage = "Unknown Error (Unable to parse the fault)";
if (typeof faultXml == "object") {
try {
var bodyNode = faultXml.firstChild.firstChild;
//Retrieve the fault node
for (var i = 0; i < bodyNode.childNodes.length; i++) {
var node = bodyNode.childNodes[i];
//NOTE: This comparison does not handle the case where the XML namespace changes
if ("s:Fault" == node.nodeName) {
for (var j = 0; j < node.childNodes.length; j++) {
var faultStringNode = node.childNodes[j];
if ("faultstring" == faultStringNode.nodeName) {
errorMessage = faultStringNode.text;
break;
}
}
break;
}
}
}
catch (e) { };
}
return new Error(errorMessage);
},
__namespace: true
};
To understand how to parse the response please review my post on using the DOM parser.
Now you can call the runme or the SDK.SAMPLES.DeleteAttributeRequest function from your form jscript handler.
Thats all there is to it!
You may also want to publish your custom attribute after creation so you may want to read my article on publishing an entity from jscript.
http://mileyja.blogspot.com/2011/03/publish-entity-in-jscript-in-crm-2011.html
You may also want to publish your custom attribute after creation so you may want to read my article on publishing an entity from jscript.
http://mileyja.blogspot.com/2011/03/publish-entity-in-jscript-in-crm-2011.html
I hope this helps!
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