SPQUeryUtil now contains CamlBuilder which is designed to build CAML query without any CAML xml, but only code.
To build CAML query by CamlBuilder:
using(SPSite site = new SPSite("http://mysiteurl"))
{
using(SPWeb web = site.OpenWeb())
{
SPList listToQuery = web.Lists["myList"];
string queryStr = CamlBuilder.BuildQuery(listToQuery, new And(new Eq("Status", "Completed"), new Eq("Id", "2")));
SPQuery query = new SPQuery();
query.Query = queryString;
var items = listToQuery.GetItems(query);
}
}
1, Support operators and joins (not all currently):
CamlBuilder.BuildQuery(listToQuery, new Eq("status", "Completed"))
generates
<Where>
<Eq>
<FieldRef Name="Status"></FieldRef>
<Value Type="Text">Completed</Value>
</Eq>
</Where>
2, Combine operators by joins:
CamlBulder.BuildQuery(listToQuery, new And(new Eq("status", "Completed"), new Eq("Id", "2"))
generates:
<Where>
<And>
<Eq>
<FieldRef Name="Status"></FieldRef>
<Value Type="Text">Completed</Value>
</Eq>
<Eq>
<FieldRef Name="ID"></FieldRef>
<Value Type="Counter">2</Value>
</Eq>
</And>
</Where>
If join contains more than two child elements, join element will be nested automatically:
CamlBulder.BuildQuery(listToQuery, new And(new Eq("status", "Completed"), new Eq("title", "Task1"), new Eq("id", "1"))
generates:
<Where>
<And>
<And>
<Eq>
<FieldRef Name="Status"></FieldRef>
<Value Type="Text">Completed</Value>
</Eq>
<Eq>
<FieldRef Name="Title"></FieldRef>
<Value Type="Text">Task1</Value>
</Eq>
</And>
<Eq>
<FieldRef Name="ID"></FieldRef>
<Value Type="Counter">2</Value>
</Eq>
</And>
</Where>
3, You need to specify the field title and the value only, for examle: new Eq("status", "Completed"), the field title is "status",
which is not case sensitive, and the field name can be either Title or InternalName, CamlBuilder will handle everything to generate a valid CAML for this expression.