I am working with the Exchange Web Services Managed API, with contact data. I have the following code, which is *functional*, but not ideal:

    foreach (Contact c in contactList)
    {
        string openItemUrl = &quot;https://&quot; + service.Url.Host + &quot;/owa/&quot; + c.WebClientReadFormQueryString;

        row = table.NewRow();
        row[&quot;FileAs&quot;] = c.FileAs;
        row[&quot;GivenName&quot;] = c.GivenName;
        row[&quot;Surname&quot;] = c.Surname;
        row[&quot;CompanyName&quot;] = c.CompanyName;
        row[&quot;Link&quot;] = openItemUrl;

        //home address
        try { row[&quot;HomeStreet&quot;] = c.PhysicalAddresses[PhysicalAddressKey.Home].Street.ToString(); }
        catch (Exception e) { }
        try { row[&quot;HomeCity&quot;] = c.PhysicalAddresses[PhysicalAddressKey.Home].City.ToString(); }
        catch (Exception e) { }
        try { row[&quot;HomeState&quot;] = c.PhysicalAddresses[PhysicalAddressKey.Home].State.ToString(); }
        catch (Exception e) { }
        try { row[&quot;HomeZip&quot;] = c.PhysicalAddresses[PhysicalAddressKey.Home].PostalCode.ToString(); }
        catch (Exception e) { }
        try { row[&quot;HomeCountry&quot;] = c.PhysicalAddresses[PhysicalAddressKey.Home].CountryOrRegion.ToString(); }
        catch (Exception e) { }

        //and so on for all kinds of other contact-related fields...
    }

As I said, this code _works_. Now I want to make it suck _a little less_, if possible.

I can&#39;t find any methods that allow me to check for the existence of the key in the dictionary before attempting to access it, and if I try to read it (with `.ToString()`) and it doesn&#39;t exist then an exception is thrown:

&gt;500&lt;br/&gt;
&gt;The given key was not present in the dictionary.

How can I refactor this code to suck less (while still being functional)?

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How can I detect if this dictionary key exists in C#?