Google maps - Part 2 - How to get current lat, lng and zoom level

Once a google map is initialized and when it is re-positioned, the latitude, longitude and zoom level can be determined using the following example.

Google maps API v3 - Part 1 - How to create a simple map?

Recently I worked on a project using Google maps. It was originally developed using Google maps API v2. I changed it to use v3 API.

Google maps v2 vs v3 API

Version 2 API requires you to register for an API key for every domain that uses google maps and must be inserted into the QueryString for the script reference. Version 3 API doesn't require an API key.

How to create a simple map?

1. First thing is to add the following script reference to your HTML page.


Note: sensor attribute is to specify whether your device has a sensor or not. (just to determine the user's location.

2. Create an object with the latitude and longitude co-ordinates. Simple map with NZ co-ordinates.

DateTime MinValue in SQL SERVER and C#

I was trying to store C# DateTime.MinValue in SQL SERVER and got the following exception

SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.

In SQL Server the minimum date that can be stored in a datetime field (1753/1/1), is not equal to the MinValue of the DateTime .NET data type (0001/1/1).

Therefore if your datetime value is DateTime.MinValue then don't save it in SQL SERVER.

IIS6 Meta bas compatibility in IIS7.5 and windows 7

IIS7 has done away with the metabase, but some pre-IIS 7 applications rely on the metabase as part of their installation process. This is a Windows feature that you can turn on and off throught the control panel.

Note: This is not a separate install.

IIS 7.5 and Windows 7

HTTP Error 500.19 - Internal Server Error

This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".

Solution

The applicationHost.config had the handler section locked:

Changed


to


and it fixed the issue.

System.Data.SqlClient.SqlException: New transaction is not allowed because there are other threads running in the session.

I got this error when using Entity Framework with the following code.


Solution

The foreach loops were the culprits. I needed to call EF but return it into an IList of that target type then loop on the IList.

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Check the site for more information.