我有一个这样的类(class)
public class Tbl
{
public List<Row> Rows {get; set;}
}
public class Row
{
public string Name {get; set;}
public Value {get; set;}
}
//Using the class
//Add rows to Tbl
Tbl t = new Tbl();
t.Rows.Add(new Row() {Name = "Row1", Value = "Row1Value"};
t.Rows.Add(new Row() {Name = "Row2", Value = "Row2Value"};
t.Rows.Add(new Row() {Name = "Row3", Value = "Row3Value"};
//Now I want to select the Row2 in this list, usually, I use this way
public Row GetRow(this Tbl t, string RowName)
{
return t.Rows.Where(x => x.Name == RowName).FirstOrDefault();
}
Row r = t.GetRow("Row2");
//But I would like to use that way
Row r = t.Rows["Row2"];
我该怎么做。
感谢您的每一条评论。
最佳答案
扩展属性不存在,但您可以使用包装器围绕 List<Row>
并添加 Indexer property
public class RowList : List<Row> {
public Row this[string key] {
get { return this.Where( x => x.Name == key ).FirstOrDefault(); }
}
}
public class Tbl
{
public RowList Rows { get; set; }
}
Tbl t = new Tbl();
// ...
Row r = t.Rows["Row2"];
关于c# - 在C#中查询另一个列表中的列表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3334021/