SharePoint 2013 Access other fields from your custom fieldtype II

I already posted about this topic in this article. With SharePoint 2013 the solution from the old post didn’t work for me, so i had to find another approach. And for my hapiness, i found a solution which i would like to present to you. The idea is -again- to access the other fields in a display, edit or new form of a list. So if something occurs the values of the column X like title can be changed. The question is how to access these fields which are also in the form?

Look at the code below:

[sourcecode language=”csharp”]

txtTitle = (TextField)GetFieldControlByName(“Feldname”);
txtTitle.ItemFieldValue = “Test”;
txtTitle.UpdateFieldValueInItem();

//Function to interact with other fields
protected BaseFieldControl GetFieldControlByName(String fieldNameToSearch)
{
if (this.Fields.ContainsField(fieldNameToSearch))
{
return this.Fields[fieldNameToSearch].FieldRenderingControl;
}
else
return null;
}

[/sourcecode]

At first i create a TextBox and call the function to get the textfield of the other column. So i call this.Fields.ContainsField(“Name”) in order to check if the field is available. If yes, i catch the FieldRenderingControl and return this one. After that i can cast it to Textfield.

To update or save the item just call your textbox with the function UpdateFieldValueInItem(). That’s it. Hope it helps you.

..:: I LIKE SHAREPOINT ::..