用字符串动态绑定对象属性

本文关键字：属性 对象 动态绑定 字符串 | 更新日期: 2023-09-27 18:13:16

我有一个下面的类

public class SearchModel
{
    public string Locations { get; set; }
    public string City { get; set; }
    public string Address { get; set; } 
    public string MaxRecord { get; set; }
    public string PageSize { get; set; }
    ....
    ....
    Approx 80 properties
}

我有一个查询字符串像"my location_Locations/new york_City/city street_Address/200_MaxRecord/20_PageSize"

上面的字符串包含类SearchModel的确切属性名。现在我想做如下操作:-

SearchModel model = new SearchModel();
string[] Parameters = "my location_Locations/new york_City/city street_Address/200_MaxRecord/20_PageSize".Split('/');
foreach (string item in Parameters)
{
    string[] value=item.Split('_');
    model.value[1] = value[0];
}

用字符串动态绑定对象属性

将以下代码添加到您的类

public class SearchModel
{
    public object this[string propertyName] 
    {
        get{
           Type myType = typeof(MyClass);                   
           PropertyInfo myPropInfo = myType.GetProperty(propertyName);
           return myPropInfo.GetValue(this, null);
        }
        set{
           Type myType = typeof(SearchModel);
            PropertyInfo myPropInfo = myType.GetProperty(propertyName);
            switch (myPropInfo.PropertyType.Name)
            {
                case "Int32":
                    myPropInfo.SetValue(this, Convert.ToInt32(value), null);
                    break;
                case "Int64":
                    myPropInfo.SetValue(this, Convert.ToInt64(value), null);
                    break;
                case "Boolean":
                    myPropInfo.SetValue(this, Convert.ToBoolean(value), null);
                    break;
                case "DateTime":
                    myPropInfo.SetValue(this, Convert.ToDateTime(value), null);
                    break;
                case "String":
                    myPropInfo.SetValue(this, value.ToString(), null);
                    break;
                default:
                    myPropInfo.SetValue(this, value, null);
                    break;
            } 
        }
    }
}

和修改后的代码

SearchModel model = new SearchModel();
string[] Parameters = "my location_Locations/new york_City/city street_Address/200_MaxRecord/20_PageSize".Split('/');
foreach (string item in Parameters)
{
    string[] value= item.Split('_');
    // I changed this line
    model[value[1]] = value[0];
}

或

SearchModel model = new SearchModel();
string[] Parameters = "my location_Locations/new york_City/city street_Address/200_MaxRecord/20_PageSize".Split('/');
foreach (string item in Parameters)
{
    string[] value= item.Split('_');
    PropertyInfo propertyInfo = model.GetType().GetProperty(value[1]);
    propertyInfo.SetValue(model, Convert.ChangeType(value[0], propertyInfo.PropertyType),
}

不区分大小写:

model.GetType().GetProperty(value[1], BindingFlags.IgnoreCase |  BindingFlags.Public | BindingFlags.Instance )
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