public string CommandText { get; set; }
    public IEnumerable<OracleParameter> Parameters { get; set; }

    private void VerifyThatAllParametersAreBound()
    {
        var variableNames = Regex.Matches(CommandText,":\\w+")
            .Cast<Match>().Select(m => m.Value).ToArray();
        var parameteterNames = Parameters.Select(p => p.ParameterName).ToArray();

        var unboundVariables = variableNames.Except(parameteterNames).ToArray();
        if (unboundVariables.Length > 0)
        {
            throw new Exception("Variable in CommandText missing parameter: "
                + string.Join(",",unboundVariables) + ".");
        }

        var unboundParameters = parameteterNames.Except(variableNames).ToArray();
        if (unboundParameters.Length > 0)
        {
            throw new Exception("Parameter that is not used in CommandText: "
                + string.Join(",unboundParameters) + ".");
        }
    }

还有一个查询抛出ORA-01008：并非所有变量都绑定.当手动将参数值插入有问题的CommandText时,查询运行,因此CommandText和Parameters-values应该没问题.我正在使用：作为变量和参数名称的前缀,它适用于其他查询.

如何查明此异常的原因？