# Queryable.Sum Method

**Silverlight**

Computes the sum of a sequence of numeric values.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

Name | Description | |
---|---|---|

Sum(IQueryable<Decimal>) | Computes the sum of a sequence of Decimal values. | |

Sum(IQueryable<Nullable<Decimal>>) | Computes the sum of a sequence of nullable Decimal values. | |

Sum(IQueryable<Double>) | Computes the sum of a sequence of Double values. | |

Sum(IQueryable<Nullable<Double>>) | Computes the sum of a sequence of nullable Double values. | |

Sum(IQueryable<Int32>) | Computes the sum of a sequence of Int32 values. | |

Sum(IQueryable<Nullable<Int32>>) | Computes the sum of a sequence of nullable Int32 values. | |

Sum(IQueryable<Int64>) | Computes the sum of a sequence of Int64 values. | |

Sum(IQueryable<Nullable<Int64>>) | Computes the sum of a sequence of nullable Int64 values. | |

Sum(IQueryable<Nullable<Single>>) | Computes the sum of a sequence of nullable Single values. | |

Sum(IQueryable<Single>) | Computes the sum of a sequence of Single values. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Decimal>>) | Computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Double>>) | Computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32>>) | Computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int64>>) | Computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Decimal>>>) | Computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Double>>>) | Computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int32>>>) | Computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>) | Computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Single>>>) | Computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence. | |

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Single>>) | Computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence. |

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