C# QueryBuilder.Add方法代码示例

 public void AddMultipleValues_AddedInOrder()
 {
     var builder = new QueryBuilder();
     builder.Add("key1", "value1");
     builder.Add("key2", "value2");
     builder.Add("key3", "value3");
     Assert.Equal("?key1=value1&key2=value2&key3=value3", builder.ToString());
 }

		protected static string ChangeQueryParameterValue(string baseUri, string queryParameterName,
			string queryParameterValue)
		{
			// Hosted uri for API compatibility
			var hostedUri = new Uri("http://test.local/");

			// Generate uri object
			var uri = new Uri(baseUri, UriKind.RelativeOrAbsolute);

			// Start with slash detection.
			var isStartWithSlash = false;

			// If the uri is not absolute uri, convert it to an absolute one
			var isAbsolute = uri.IsAbsoluteUri;
			if (!isAbsolute)
			{
				isStartWithSlash = !string.IsNullOrEmpty(baseUri) && baseUri[0] == '/';
				uri = new Uri(hostedUri, uri);
			}

			// Extract query string and change parameter
			var qs = QueryHelpers.ParseQuery(uri.Query);
			qs[queryParameterName] = new[] { queryParameterValue };

			var qb = new QueryBuilder();
			foreach (var item in qs)
			{
				qb.Add(item.Key, (IEnumerable<string>)item.Value);
			}

			// Rebuild uri
			var builder = new UriBuilder(uri)
			{
				Query = qb.ToString().Remove(0, 1) // Remove leading "?" mark
			};

			var finalUri = builder.Uri;

			// If the original uri is not absolute, remove the hosted part
			if (!isAbsolute)
			{
				finalUri = hostedUri.MakeRelativeUri(finalUri);
			}

			var result = UriHelper.Encode(finalUri);

			// Add start slash if necessary
			if (!isAbsolute && isStartWithSlash)
			{
				result = "/" + result;
			}

			return result;
		}

 public void AddIEnumerableValues_AddedInOrder()
 {
     var builder = new QueryBuilder();
     builder.Add("key", new[] { "value1", "value2", "value3" });
     Assert.Equal("?key=value1&key=value2&key=value3", builder.ToString());
 }

 public void AddReservedCharacters_PercentEncoded()
 {
     var builder = new QueryBuilder();
     builder.Add("key&", "value#");
     Assert.Equal("?key%26=value%23", builder.ToString());
 }

 public void AddSpace_PercentEncoded()
 {
     var builder = new QueryBuilder();
     builder.Add("key", "value 1");
     Assert.Equal("?key=value%201", builder.ToString());
 }

 public void AddSimple_NoEncoding()
 {
     var builder = new QueryBuilder();
     builder.Add("key", "value");
     Assert.Equal("?key=value", builder.ToString());
 }

//.........这里部分代码省略.........
                Debug.Assert(context.BufferState == SegmentState.Beginning);
                Debug.Assert(context.UriState == SegmentState.Beginning);

                var segment = _template.Segments[i];

                for (var j = 0; j < segment.Parts.Count; j++)
                {
                    var part = segment.Parts[j];

                    if (part.IsLiteral)
                    {
                        if (!context.Accept(part.Text))
                        {
                            return null;
                        }
                    }
                    else if (part.IsParameter)
                    {
                        // If it's a parameter, get its value
                        object value;
                        var hasValue = acceptedValues.TryGetValue(part.Name, out value);
                        if (hasValue)
                        {
                            acceptedValues.Remove(part.Name);
                        }

                        var isSameAsDefault = false;
                        object defaultValue;
                        if (_defaults != null && _defaults.TryGetValue(part.Name, out defaultValue))
                        {
                            if (RoutePartsEqual(value, defaultValue))
                            {
                                isSameAsDefault = true;
                            }
                        }

                        var converted = Convert.ToString(value, CultureInfo.InvariantCulture);
                        if (isSameAsDefault)
                        {
                            // If the accepted value is the same as the default value buffer it since
                            // we won't necessarily add it to the URI we generate.
                            if (!context.Buffer(converted))
                            {
                                    return null;
                            }
                        }
                        else
                        {
                            // If the value is not accepted, it is null or empty value in the
                            // middle of the segment. We accept this if the parameter is an
                            // optional parameter and it is preceded by an optional seperator.
                            // I this case, we need to remove the optional seperator that we
                            // have added to the URI
                            // Example: template = {id}.{format?}. parameters: id=5
                            // In this case after we have generated "5.", we wont find any value
                            // for format, so we remove '.' and generate 5.
                            if (!context.Accept(converted))
                            {
                                if (j != 0 && part.IsOptional && segment.Parts[j - 1].IsOptionalSeperator)
                                {
                                    context.Remove(segment.Parts[j - 1].Text);
                                }
                                else
                                {
                                    return null;
                                }
                            }
                        }
                    }
                }

                context.EndSegment();
            }

            // Encode the URI before we append the query string, otherwise we would double encode the query string
            var encoded = new StringBuilder();
            encoded.Append(UriEncode(context.Build()));

            // Generate the query string from the remaining values
            var queryBuilder = new QueryBuilder();
            foreach (var kvp in acceptedValues)
            {
                if (_defaults != null && _defaults.ContainsKey(kvp.Key))
                {
                    // This value is a 'filter' we don't need to put it in the query string.
                    continue;
                }

                var converted = Convert.ToString(kvp.Value, CultureInfo.InvariantCulture);
                if (String.IsNullOrEmpty(converted))
                {
                    continue;
                }

                queryBuilder.Add(kvp.Key, converted);
            }

            encoded.Append(queryBuilder.ToString());
            return encoded.ToString();
        }