小编rya*_*lli的帖子

我在WPA中有以下代码,我正在尝试将其转换为WPF.我试过Keydown而不是Keypress并改变了,例如,

(e.keyChar == '-') to (e.key == e.Subtract):

1. 它的工作原理不一样
2. 我无法在e.key中找到等号

第一个代码:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        foreach (TextBox tb in this.Controls.OfType<TextBox>())
        {
            tb.Enter += textBox_Enter;
        }
    }

    void textBox_Enter(object sender, EventArgs e)
    {
        focusedTextbox = (TextBox)sender;
    }

private void Form1_KeyPress(object sender, KeyPressEventArgs e)
    {

        if (e.KeyChar == '+')
        {
            operand1.Real = getOperand.Real;
            operand1.Imag = getOperand.Imag;
            flag1 = 1;
            e.Handled = true;
        }
        else if (e.KeyChar == '-')
        {

            if (focusedTextbox != null)
            {
                if …

我使用knockoutJS,当我使用"fromJS"时,我有以下错误

TypeError:无法调用未定义的方法'fromJS'

我的JavaScript代码

 <script src="../../Scripts/jquery-1.8.3.js" type="text/javascript"></script>
 <script src="../../Scripts/knockout-2.1.0.js" type="text/javascript"></script>


 <script type="text/javascript">
     $(document).ready(function () {
         var PersonModel = function (data) {
             ko.mapping.fromJS(data, {}, this);
         };

         var data = $.getJSON("http://localhost:40913/candidate/index/1", function (data)
         {
             viewModel = new PersonModel(data);
             ko.applyBindings(viewModel);
         }
         );
     });
 </script>

JSON输出

{
PersonalInfo: {
PTitle: null,
PGender: {
Id: 1,
Name: "Male",
IsDeleted: false,
LastModified: "2013-01-21T00:00:00",
ModifiedBy: "System Auto Generated"
},
PMilitaryService: {
Id: 2,
Status: "Exempted",
IsDeleted: false,
LastModified: "2013-01-21T00:00:00",
ModifiedBy: "System Auto Generated"
},
PMarital: {
Id: 2, …

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我想获得所选的选项对象

    <select data-bind="options: availableCountries,
                       value: selectedCountry, event: { select: onSelect}"></select>


<script type="text/javascript">
    // Constructor for an object with two properties
    var Country = function(name, population) {
        this.countryName = name;
        this.countryPopulation = population;   
    };       

    var viewModel = {
        availableCountries : ko.observableArray([
            new Country("UK", 65000000),
            new Country("USA", 320000000),
            new Country("Sweden", 29000000)
        ]),
        selectedCountry : ko.observable(), // Nothing selected by default
        onSelect: function(){
              console.log(viewModel.selectedCountry)
              // it is showing just an country name and what i what is whole object
              // e.g. { "UK", …

我正在使用带有c#的数据表,我希望用它来过滤数据表.但是当我运行我的代码后抛出异常"表达式包含不支持的运算符'之间'"

这是代码:

string str = "ITEM_ID BETWEEN  " + textEdit1.Text + " AND  " +    textCUS_COA_CODE.Text + " ";

DataTable dt = new DataTable();
dt = this.pAK_ASIADataSet.sp_STOCKS_report;

dt.DefaultView.RowFilter =str;

我有一些场景,我有几个后台任务(TPL任务),它们按照自己的时间表运行.任务1被认为具有比任务2更高的优先级.

如果调度程序想要运行任务1,我需要检查任务2是否正在运行并在任务1完成执行时暂停它.

这甚至可能吗？如果是,我怎样才能实现这一目标？

我想使用下面的cod在mysql中的表和sql server中的1个表之间进行比较.但我试图使用的长度方法被标记为错误.我应该怎么做,我需要一些帮助.谢谢 !

int lengthClienti = MySqlSetClienti.Tables["clienti"].Length;

int columnClienti = 4;

for (int i = 0; i <= lengthClienti - 1; i++)//row
{
    for (int j = 0; i <= columnClienti; j++)//column
    {
        if (SqlDataSet.Tables["ClientiImporti"].Rows[i][j].ToString() == MySqlSetClienti.Tables["clienti"].Rows[i][j].ToString())
        {
        }
     }
 }