Question

What kind of collection I should use to convert NameValue collection to be bindable to GridView? When doing directly it didn’t work.

Code in aspx.cs

  private void BindList(NameValueCollection nvpList)   {      resultGV.DataSource = list;      resultGV.DataBind();   } 

Code in aspx

<asp:GridView ID='resultGV' runat='server' AutoGenerateColumns='False' Width='100%'>     <Columns>          <asp:BoundField DataField='Key' HeaderText='Key' />          <asp:BoundField DataField='Value' HeaderText='Value' />     </Columns> </asp:GridView> 

Any tip most welcome. Thanks. X.

Answer 1

Can you use Dictionary<string,string> instead of NameValueCollection. Since Dictionary<T,T> implements IEnumerable you could use LINQ as so:

resultGV.DataSource = from item in nvpDictionary                       select new { Key = item.Key, Value = item.Value }; resultGV.DataBind(); 

[EDIT] Actually you may be able to use Dictionary directly as:

resultGV.DataSource = nvpDictionary; resultGV.DataBind(); 

If it doesn’t map key/value the way you want you can always go back to LINQ. LINQ would also allow you to rename the fields to whatever you want.

[EDIT] If you can’t change to use Dictionary<T,T>, make a copy of the NameValueCollection as a Dictionary in the method and bind to it.

private void BindList(NameValueCollection nvpList) {    Dictionary<string,string> temp = new Dictionary<string,string>();    foreach (string key in nvpList)    {       temp.Add(key,nvpList[key]);    }     resultGV.DataSource = temp;    resultGV.DataBind(); } 

If you do this a lot, you could write an extension method to convert to a Dictionary, and use it so.

public static class NameValueCollectionExtensions {    public static Dictionary<string,string> ToDictionary( this NameValueCollection collection )    {       Dictionary<string,string> temp = new Dictionary<string,string>();       foreach (string key in collection)       {           temp.Add(key,collection[key]);       }       return temp;    } }  private void BindList(NameValueCollection nvpList) {    resultGV.DataSource = nvpList.ToDictionary();    resultGV.DataBind(); }