[Reprinted] 4 ways to programmatically Add a row to a repeating table in infopath

Original article: http://www.bizsupportonline.net/infopath2007/4-way-programmatically-add-row-repeating-table.htm
By s.y. M. Wong-a-ton
Learn how to take advantage of the 4 overloads of the appendchild method to programmatically Add rows to repeating tables in infopath.
Inprogrammatically Add a row to a repeating table using an xmlwriter objecti wrote about how you can use the xmlwriter object to add a row to a repeating table. while waiting of you have adopted this way of adding a row to a repeating table, there are several other ways available, which I'll touch.
All methods to add a row to a repeating table make use of theappendchildmethod of anxpathnavigatorobject. There are 4 overloads forappendchild:
One that accepts a stringone that accepts anxpathnavigatorobjectone that accepts anxmlreaderobjectone that returns anxmlwriterobject
You can use any one of the aforementioned methods forappendchildto create a new row in a repeating table. all of the examples in this blog post use the XML schema for a repeating table as described inprogrammatically Add a row to a repeating table using an xmlwriter object.
Method 1-use a string to add a row to a repeating table in infopath
In the following sample code the XML for the row is constructed using astringbuilderobject and then passed to theappendchildmethod as a string to create the row.
String my = namespacemanager. lookupnamespace ("my ");
Stringbuilder sb = new stringbuilder ();
SB. append (" ");
SB. append (" ");
SB. append ("cell 1 ");
SB. append (" ");
SB. append (" ");
SB. append ("Cell 2 ");
SB. append (" ");
SB. append (" ");
SB. append ("Cell 3 ");
SB. append (" ");
SB. append (" ");
Maindatasource. createnavigator (). selectsinglenode (
"/My: myfields/My: group1", namespacemanager). appendchild (sb. tostring ());
Method 2-Use an xpathnavigator object to add a row to a repeating table in infopath
In the following sample code anxmlincluentis used to construct the XML for a row and then an xpathnavigator object is created from the document element of thisxmldocumentand passed to theappendchildmethod to create the row.
Xmldocument Doc = new xmldocument ();
Xmlnode group = Doc. createelement ("Group2", namespacemanager. lookupnamespace ("my "));
Xmlnode field = Doc. createelement ("field1", namespacemanager. lookupnamespace ("my "));
Xmlnode node = group. appendchild (field );
Node. innertext = "cell 1 ";
Field = Doc. createelement ("field2", namespacemanager. lookupnamespace ("my "));
Node = group. appendchild (field );
Node. innertext = "Cell 2 ";
Field = Doc. createelement ("field3", namespacemanager. lookupnamespace ("my "));
Node = group. appendchild (field );
Node. innertext = "Cell 3 ";
Doc. appendchild (group );
Maindatasource. createnavigator (). selectsinglenode (
"/My: myfields/My: group1 ",
Namespacemanager). appendchild (Doc. documentelement. createnavigator ());
Method 3-use an xmlreader object to add a row to a repeating table in infopath
In the following sample code afilestreamobject is used to read an XML file that contains the XML structure for a row. It then creates anxmlreaderobject from thefilestreamand passes it to theappendchildmethod to create the row.
Contents of a file namedrow. xmlthat is located on the C-drive:
Cell 1 Cell 2 Cell 3
Code to add a row to the repeating table:
Using (filestream FS = new filestream (@ "C: \ row. xml", filemode. Open ))
{
Using (xmlreader reader = xmlreader. Create (FS ))
{
Maindatasource. createnavigator (). selectsinglenode (
"/My: myfields/My: group1", namespacemanager). appendchild (Reader );
Reader. Close ();
}
FS. Close ();
}
Method 4-use an xmlwriter object to add a row to a repeating table in infopath
Seehttp: // response