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Comments (2)

parvezdesignworks avatar parvezdesignworks commented on May 28, 2024

SOLVED

comment this line in QueryableExtensions.cs and write the below code
//return Expression.Lambda<Func<T, bool>>(containsMethodExp, parameterExp);

var Equal_MI = typeof(object).GetMethod("Equals", new[] { propertyExp.Type, typeof(object) });
var left = Expression.Convert(propertyExp, typeof(object));
var right = Expression.Constant(null);
var nullExp = Expression.Call(null, Equal_MI, left, right);
var conditionExp = Expression.Condition(nullExp, Expression.Constant(false), containsMethodExp);
return Expression.Lambda<Func<T, bool>>(conditionExp, parameterExp);

from datatables.queryable.

AlexanderKrutov avatar AlexanderKrutov commented on May 28, 2024

@parvezdesignworks thank you for the bug report and sorry for the late response.
Null check can be added even shortly:

var notNullExp = Expression.NotEqual(exp, Expression.Constant(null, typeof(object)));
return Expression.Lambda<Func<T, bool>>(Expression.AndAlso(notNullExp, containsMethodExp), parameterExp);

Done in 1.6.2 version.

from datatables.queryable.

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