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Question regarding C# coding for plugin...

Hi folks,

So here is my question, we have 2 table

Quote 1 :N Quotelineitem

So in the table quotelineitem we have many rows that are related to the quote.

For now, I need help on the coding. I want to retrieve all rows in a subgrid where the quoteid = the actual form we're on and then I want to add some text to a specific field call arb_lineitemsid

The code below is able to get me the guid of the actual form I am on which is good but the rest doesn't really work... I need guidance.

EntityReference mfpquotelookup = (EntityReference)entity.Attributes["new_mfpquote"];

Guid QuoteID = mfpquotelookup.Id;
var mfpquotelookupID = mfpquotelookup.Id;
var mfpquotelookupname = mfpquotelookup.Name;
// entity.Attributes.Add("arb_lineitemsid", mfpquotelookupID + "HEY");

QueryExpression qe = new QueryExpression("new_mfpquotelineitem");
qe.Criteria.AddCondition("new_mfpquote", ConditionOperator.Equal, QuoteID);
EntityCollection Colmfpquotelineitems = service.RetrieveMultiple(qe);

foreach (var targetEntity in Colmfpquotelineitems.Entities)
{
entity.Attributes.Add("arb_lineitemsid", mfpquotelookupID + "HEY");
}

//Set condition Value var query_quoteid = "your actual quote ID"; //Instantiate QueryExpression query var query = new QueryExpression("new_mfpquotelineitem"); // Add columns to you want to edit query.ColumnSet.AddColumn("arb_lineitemsid"); //Add filte query.Criteria query.Criteria.AddCondition("quoteid",ConditionOperator.Equal, query_quoteid); var result =service.RetieveMultiple(query); if(result?.Entities?.Count !=0) { //fetch them foreach(var item in result.Entites) { var updatedquotelineItem = new Entity("new_mfpquotelineitem"); updatedquotelineItem["arb_lineitemsid"]= (Guid)query_quoteid; //if the field is lookup data typ //if field lookup you cannot add any Text. If the field Text field than you add text updatedquotelineItem.Id = item.Id; service.Update(updatedquotelineItem); } }

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