如何让所有的女性?

时间:2015-08-04 22:16:53

标签: c# visual-studio-lightswitch lightswitch-2013 lightswitch-2012

我想获得用于计算的性别,例如男性和女性选项在一列中。我想让所有男性或所有女性进行计算。

我有一个“计算属性”,它给出了所有项目的列表以及计算。这是代码:

partial void MeanFemale_Compute(ref string result)
{
    // Set result to the desired field value

    int totalAge = 0;
    int count = 0;

    foreach (InsuranceQuotation i in his.DataWorkspace.ApplicationData.InsuranceQuotations)
    {
        totalAge += i.mAge;
        count++;
    }

    if (count != 0)
    {
        result = (totalAge / count).ToString();
    }

}

如何在此“计算属性”中过滤性别。

3 个答案:

答案 0 :(得分:7)

您可以使用LINQ。它看起来像这样:

int averageAge =  this.DataWorkspace.ApplicationData.InsuranceQuotations.
    Where(iq => iq.Gender == Gender.Female).
    Average(iq => iq.mAge);

答案 1 :(得分:0)

你能用if语句过滤吗?

partial void MeanFemale_Compute(ref string result)
{
    // Set result to the desired field value

    int totalAge = 0;
    int count = 0;

    foreach (InsuranceQuotation i in this.DataWorkspace.ApplicationData.InsuranceQuotations)
    {

        if(i.Female == true)
        {
            totalAge += i.mAge;
            count++;
        }
    }

    if (count != 0)
    {
        result = (totalAge / count).ToString();
    }

}

答案 2 :(得分:0)

希望这可以帮助其他人过滤选择列表 在_InitializeDataWorkspace中:

        // get count of females
        double fgender = (from gender in InsuranceQuotations
                             where gender.mGender == "Female"
                             select gender).Count();

        //get sum of females ages
        double female = InsuranceQuotations.Where(x => x.mGender == "Female").Sum(t => t.mAge);

        // get count males
        double mgender = (from gender in InsuranceQuotations
                             where gender.mGender == "Male"
                             select gender).Count();

        //get sum of males ages
        double male = InsuranceQuotations.Where(x => x.mGender == "Male").Sum(t => t.mAge);     

        // MeanFmale amd MeanMmale - The fields that display 
        MeanFmale = (female / fgender).ToString();
        MeanMmale = (male / mgender).ToString();

   double fmale = InsuranceQuotations.Where(x => x.mGender == "Female").Average(t => t.mAge);

   double mmale = InsuranceQuotations.Where(x => x.mGender == "Male").Average(t => t.mAge);

    // MeanFmale amd MeanMmale - The fields that display 
    MeanFmale = fmale.ToString();
    MeanMmale = mmale.ToString();