[英]IF Null in Model - ASP.NET MVC4
Can I declare "IF" statement or something similar to Models in MVC, eg here is my code: 我可以声明“ IF”语句还是类似于MVC中的Models,例如,这是我的代码:
namespace SolrWeb.Models
{
public class SolrVariables
{
[SolrField("sequentialid")]
public long Sequ { get; set; }
[SolrField("exchangestatus")]
public int ExtId { get; set; }
[SolrField("msgtype")]
public ICollection<string> MsgT { get; set; }
...
So variable: 所以变量:
[SolrField("msgtype")]
public ICollection<string> MsgT { get; set; }
-> this if is NULL return Default "0" else return "String"
I forgot to put my next important code: 我忘了输入下一个重要代码:
...
@foreach (var row in Model)
{
<tr>
<td>@row.Sequ</td>
<td>@row.ExtId</td>
<td>@row.MsgT.First()</td>
Because of ".First" if is Null code brake, this is why I whant to have If
in my Model, so if it is Null, it won't brake...
Thanks all for help 谢谢大家的帮助
You could do something like this: 您可以执行以下操作:
private ICollection<string> _msgT;
[SolrField("msgtype")]
public ICollection<string> MsgT
{
get
{
if(_msgT == null)
{
return new ICollection<string>() With {"0"};
}
return new ICollection<string>() With {"String"};
};
set(ICollection<string> value)
{
_msgT = value
};
}
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