One of the errors I received when I was trying to get the parent child insert to work with NHibernate was: Ein expliziter Wert für die Identitätsspalte kann nicht in der ‘CHILD’-Tabelle eingefügt werden, wenn IDENTITY_INSERT auf OFF festgelegt ist Cannot insert explicit value for identity column in table ‘IdentityTable’ when IDENTITY_INSERT is set to […]
Read More →In a situation where I have a DataGrid which is being bound to a List of a specific class and the DataGrid has AutoGenerateColumns set to true, I found myself needing a way to hide some of the columns which I did not want to present to a user. Below is an example of binding […]
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There are a number of name differences between a windows form and a WPF program. For example, in a windows form program the event which is triggered when a user double-clicks on a data grid is called Doubleclick. The event in a WPF program is called MouseDoubleClick. Therefore the way to implement, program or add […]
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The way a problem is approached can have some serious consequences. Take for example the task I had to add some data to a DataGrid in WPF and allow a user to select the rows. When the rows were selected I would capture the details and put them into a form where they could be […]
Read More →I needed to save an XML formatted file as a string which required double quotes around the attributes. The below code shows how to add double quotes to a string. string data = “<customer name=\”Ben Perkins\” class=\”Customer\”> <property name=\”Id\” /><property name=\”Address\” /> <property name=\”Occupation\” /> <property name=\”Remark\” /></ customer >”; Notice […]
Read More →It took me some time to find out that you cannot have periods “.” in the column name of dynamically created DataTables. I would run the query, created the columns and add the rows to the table, but nothing would show in the DataGrid when I bound it. I use the HQL interface from NHibernate […]
Read More →One of the awesome capabilities of NHibernate is its 1st and 2nd level caching functionality. Each time a query is submitted for execution NHibernate first looks in the cache for the entity before taking the query to the database and selecting the data. There is a lot of terminology you need to know before you […]
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This is an old article I wrote some years ago. I am adding it here as I move all my articles to this location. Enjoy the historical event. I am very excited, to say the least, to start using the preview/beta releases of Windows 8 Server, Windows 8, IIS 8 and Visual Studio 11. I […]
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I was setting up an Application Request Routing server and received the error shown in Figure 1 when I attempted to access the ARR URL. Figure 1, HTTP Error 502.4 – Bad Gateway The cause was due to the Health Status of the servers being set to “Unhealthy” as shown in Figure 2. They were […]
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I have spent a lot of time Working with NHibernate 3.0 and now am also giving some attention to the Entity Framework. One of the road blocks for using NHibernate is the initial configuration requirements. There are a significant number of actions which must be taken to get NHibernate working, where as, the Entity Framework […]
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