本文整理汇总了C#中DbExpressionKind.ToString方法的典型用法代码示例。如果您正苦于以下问题：C# DbExpressionKind.ToString方法的具体用法？C# DbExpressionKind.ToString怎么用？C# DbExpressionKind.ToString使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DbExpressionKind的用法示例。
在下文中一共展示了DbExpressionKind.ToString方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CreateComparison
private Expression CreateComparison(Expression left, Expression right, DbExpressionKind kind)
{
if (left.Type == typeof(string) && right.Type == typeof(string))
{
return CreateStringComparison(left, right, kind);
}
switch (kind)
{
case DbExpressionKind.Equals:
return Expression.Equal(left, right);
case DbExpressionKind.NotEquals:
return Expression.NotEqual(left, right);
case DbExpressionKind.GreaterThan:
return Expression.GreaterThan(left, right);
case DbExpressionKind.GreaterThanOrEquals:
return Expression.GreaterThanOrEqual(left, right);
case DbExpressionKind.LessThan:
return Expression.LessThan(left, right);
case DbExpressionKind.LessThanOrEquals:
return Expression.LessThanOrEqual(left, right);
default:
throw new InvalidOperationException(
"The ExpressionKind cannot be " + kind.ToString());
}
}示例2: GetCompareMode
private Tuple<int, bool> GetCompareMode(DbExpressionKind kind)
{
switch (kind)
{
case DbExpressionKind.Equals:
return Tuple.Create(0, true);
case DbExpressionKind.NotEquals:
return Tuple.Create(0, false);
case DbExpressionKind.GreaterThan:
return Tuple.Create(1, true);
case DbExpressionKind.GreaterThanOrEquals:
return Tuple.Create(-1, false);
case DbExpressionKind.LessThan:
return Tuple.Create(-1, true);
case DbExpressionKind.LessThanOrEquals:
return Tuple.Create(1, false);
}
throw new InvalidOperationException(
"The ExpressionKind cannot be " + kind.ToString());
}