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I found a strange behavior UriBuilder in .NET
Senario 1:
Dim uri As New UriBuilder("http://www.test/login.aspx")
uri.Query = "?test=Test"
Dim url As String = uri.ToString()
After this code is run the url string contains "http://www.test/login.aspx??test=Test"
Solution was to not add the ?.
Senario 2:
Dim uri As New UriBuilder("http://www.test/login.aspx?test=123")
uri.Query += "&abc=Test"
Dim url As String = uri.ToString()
After that code is run we yet again have two ? "http://www.test:80/login.aspx??test=123&abc=Test".
So am I doing some thing wrong when using the uri builder?
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public abstract class UriBuilder extends Object. URI template-aware utility class for building URIs from their components. See Path. value() for an explanation of URI templates.
UriBuilder(String, String, Int32, String, String) Initializes a new instance of the UriBuilder class with the specified scheme, host, port number, path, and query string or fragment identifier. UriBuilder(Uri) Initializes a new instance of the UriBuilder class with the specified Uri instance.
Add a WHERE clause that contains the fields you want to add parameters to. If a WHERE clause already exists, check to see whether the fields you want to add parameters to are already in the clause. If they aren't, add them. Note that you need to add the same filter to each section of the query.
appendQueryParameter(String key, String value) Encodes the key and value and then appends the parameter to the query string. Uri.Builder. authority(String authority) Encodes and sets the authority.
The following example sets the Query property.
UriBuilder baseUri = new UriBuilder("http://www.contoso.com/default.aspx?Param1=7890");
string queryToAppend = "param2=1234";
if (baseUri.Query != null && baseUri.Query.Length > 1)
baseUri.Query = baseUri.Query.Substring(1) + "&" + queryToAppend;
else
baseUri.Query = queryToAppend;
The first char ? is not necessary.
More info: http://msdn.microsoft.com/en-us/library/system.uribuilder.query.aspx
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