How to get the value for an expando object #
First I read the txt files into a folder and after I have moistened objects with expando Object.
But now I would like to get some value from these objects in order to populate the listview (winforms).
private void Form1_Load(object sender, EventArgs e)
{
string pattern = "FAC*.txt";
var directory = new DirectoryInfo(@"C:\\TestLoadFiles");
var myFile = (from f in directory.GetFiles(pattern)
orderby f.LastWriteTime descending
select f).First();
hydrate_object_from_metadata("FAC",listBox3);
hydrate_object_from_metadata("BL", listBox4);
this.listBox3.MouseDoubleClick += new MouseEventHandler(listBox3_MouseDoubleClick);
this.listBox1.MouseClick += new MouseEventHandler(listBox1_MouseClick);
}
void hydrate_object_from_metadata(string tag, ListBox listBox)
{
SearchAndPopulateTiers(@"C:\TestLoadFiles", tag + "*.txt", tag);
int count = typeDoc.Count(D => D.Key.StartsWith(tag));
for (int i = 0; i < count; i++)
{
object ob = GetObject(tag + i);
///HERE I WOULD LIKE GET DATA VALUE FROM ob object
}
}
Object GetObject(string foo)
{
if (typeDoc.ContainsKey(foo))
return typeDoc[foo];
return null;
}
void SearchAndPopulateTiers(string path, string extention, string tag)
{
DirectoryInfo di = new DirectoryInfo(path);
FileInfo[] files = di.GetFiles(extention);
int i = 0;
foreach (FileInfo file in files)
{
var x = new ExpandoObject() as IDictionary<string, Object>;
string[] strArray;
string s = "";
while ((s = sr.ReadLine()) != null)
{
strArray = s.Split('=');
x.Add(strArray[0],strArray[1]);
}
typeDoc.Add(tag+i,x);
i++;
}
}
So is it possible to get the value for the expando object?
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var eo = new ExpandoObject();
object value = null;
Method # 1: dynamic
dynamic eod = eo;
value = eod.Foo;
Method # 2: IDictionary
var eoAsDict = ((IDictionary<String, Object>)eo);
if (eoAsDict.TryGetValue("Foo", out value))
{
// Stuff
}
foreach (var kvp in eoAsDict)
{
Console.WriteLine("Property {0} equals {1}", kvp.Key, kvp.Value);
}
You will not say that typeDoc
(is it different ExpandoObject
?), But if you put in it x
, and x
- this ExpandoObject
, you can take it x
back, and it will still be one. The fact that it x
is typed as a reference to IDictionary<String, Object>
within this loop is neither here nor there. It also doesn't matter if it returns GetObject()
object
; the link typed object
can refer to anything at all. The return type of the thing GetObject()
is an integral part of the returned actual thing, not a reference to it.
Hence:
dynamic ob = GetObject(tag + i);
or
var ob = GetObject(tag + i) as IDictionary<String, Object>;
... depending on whether you want to access the properties like ob.Foo
or ob["Foo"]
.
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