Question

我有一个CibilResponse类，它具有类类型（TUEF类）的属性。我正在尝试为CibilEnquiryEnq.Tuef.Version分配值，但我得到空引用错误。在你将这个问题标记为重复之前，让我提一下我已经阅读了一些类似的问题及其在SO上的答案以及我在构造函数中初始化tuef的帖子，正如你在我的代码中看到的那样。你能否指出你能做什么，我做错了什么？

ICIBIL.cs

[ServiceContract]
public interface ICIBIL
{

    [OperationContract]
    string InsertCibil(CibilResponse cibilResponse);


    [OperationContract]
    string GenerateEnquiry(CibilEnquiry testObj);


}

[DataContract]
public class CibilResponse
{
    [DataMember]
    public string ResponseString { get; set; }
    [DataMember]
    public string Business { get; set; }
    [DataMember]
    public string MkrId { get; set; }
}


[DataContract]
public class CibilEnquiry
{
    [DataMember]
    public TUEF Tuef { get; set; }   

    public CibilEnquiry()
    {
        this.Tuef = new TUEF();
    }

}


    [DataContract]
    public class TUEF
    {
        [DataMember]
        public string SegmentTag { get; set; }
        [DataMember]
        public string Version { get; set; }
        [DataMember]
        public string MemberReferenceNumber { get; set; }        

    }

申请：

CibilWcfService.CIBIL obj = new CibilWcfService.CIBIL();
CibilWcfService.CibilEnquiry CibilEnquiryEnq = new CibilWcfService.CibilEnquiry();
CibilEnquiryEnq.Tuef.Version = "123";// null reference error here
string res = obj.GenerateEnquiry(CibilEnquiryEnq);

Answer 1

你能尝试以下吗？ C＃区分大小写。

<div class="row col2">
    <?php echo $form->labelEx($model,'visited_date'); ?>
    <?php 

    $this->widget('zii.widgets.jui.CJuiDatePicker',array(
        'model' => $model,
        'attribute'=>'visited_date',
        'options'=>array(
            'showAnim'=>'drop',//'slide','fold','slideDown','fadeIn','blind','bounce','clip','drop'
            'dateFormat' => 'yy-mm-dd',
            'showButtonPanel' => true,      
        ),
        'htmlOptions'=>array('size'=>30,'class'=>'date',  //'value'=> date("Y-m-d")

         ),
    ));
  ?>
    <?php echo $form->error($model,'visited_date'); ?>
</div>

    <div class="row col2">
    <?php echo $form->labelEx($model,'next_visited_date'); ?>
    <?php 
    $this->widget('zii.widgets.jui.CJuiDatePicker',array(
        'model' => $model,
        'attribute'=>'next_visited_date',
        'options'=>array(
            'showAnim'=>'drop',`enter code here`
            'dateFormat' => 'yy-mm-dd',
            'showButtonPanel' => true,
            ),
        'htmlOptions'=>array(
    'style'=>'height:20px; border-color: #448844;color:red; float:left;',
),
    ));
  ?>
<?php echo $form->error($model,'next_visited_date'); ?>
</div>

Answer 2

这可能会为你做到这一点

$query = "select id, author_name, whatever from author";
$author_records = $database->Execute($query);
foreach ($author_records as $fields) {
    echo "Author: {$fields['author_name']} whatever <br/>";
    $subquery = "select whatever from books where id = whatever";
    $book_records = $database->Execute($subquery);
    foreach ($book_records as $otherfields) {
        echo "Book whatever whatever";
    }
}

WCF：对象引用未设置为对象的实例

2 个答案: