Infopath: How to Solve infopath's problem of uploading multiple attachments

Now let's take a look at the end code section.

The main technical points in the Code Section are infopath attachment decomposition and repeated infopath table operations.

Namespace reference

Usingmicrosoft. Office. infopath;

Using;

Using. xml;

Using. xml. XPath;

Using. Windows. forms;

Using. text;

First, register two button events

publicvoidInternalStartup
　　　　{
　　　　　　((ButtonEvent)EventManager.ControlEvents["CTRL12_5"]).ClickedClickedEventHandler(CTRL12_5_Clicked);
　　　　　　((ButtonEvent)EventManager.ControlEvents["CTRL18_5"]).ClickedClickedEventHandler(CTRL18_5_Clicked);
　　　　}

The upload button event mainly deals with file splitting and uploading and duplicate table deletion.

Publicvoidctrl12_5_clicked (objectsender, clickedeventargse)
{
// Write code here
Xpathnavigatordomnav = maindatasource. createnavigator;
Xpathnodeiteratorrows = domnav. Select ("/My: myfields/My: Group3/My: group5", namespacemanager );
Xpathnodeiteratorrows1;
Mynamespace = namespacemanager. lookupnamespace ("my ");
While (rows. movenext)
{
Rows1 = domnav. Select ("/My: myfields/My: group6/My: group7", namespacemanager );
Attachment = rows. Current. selectsinglenode ("My: attachment", namespacemanager). value;
Attachmentbytes = convert. frombase64string (Attachment );
Namebufferlen = attachmentbytes [20] * 2;
Filenamebuffer = [namebufferlen];
// Theactualfilenamestartsatposition24
For (I = 0; I <namebufferlen; I)
{
Filenamebuffer [I] = attachmentbytes [24 + I];
}
// Originalfilenameminusthelastcharacter!
Charasciichars = unicodeencoding. Unicode. getchars (filenamebuffer );
Filename = (asciichars );
Filename = filename. sub (0, filename. Length-1 );
//. Gif '/> name. Add (filename );
// Thefileislocatedaftertheheader, whichis24slong
// Plusthelengthofthefilename.
Filecontent = [attachmentbytes. Length-(24 + namebufferlen)];
For (I = 0; I <filecontent. length; I)
{
Filecontent [I] = attachmentbytes [24 + namebufferlen + I];
}
Apws. agilepartsapws = attachment. apws. agileparts;
Savepath = @ "http: // ascentn-Moss: 8080/shared % 20 documents ";
Apws. Credentials =. net. credentialcache. defaultcredentials;
Attachurl = apws. uploadfiletosps2 (savepath + "/" + filename, true, filecontent );
K = 0;
(Rows1.count0)
K = 1;
　　　　　　　　
K = rows1.count + 1;
　　
Using (xmlwriterwriter = maindatasource. createnavigator. selectsinglenode ("/My: myfields/My: group6", namespacemanager). appendchild)
{
Writer. writestartelement ("group7", mynamespace );
Writer. writeelementstring ("fieldid", mynamespace, K .);
Writer. writeelementstring ("fieldurl", mynamespace, attachurl );
Writer. writeelementstring ("fieldname", mynamespace, filename );
Writer. writeendelement;
Writer. close;
}
　　　　　　　　
}
Group2nodescount = rows. count;
Xpathnavigatorfirstgroup2nodenav = domnav. selectsinglenode ("/My: myfields/My: Group3/My: group5 [1]",
Namespacemanager );
Xpathnavigatorlastgroup2nodenav = domnav. selectsinglenode ("/My: myfields/My: Group3/My: group5 [" + group2nodescount. + "]", namespacemanager );
Firstgroup2nodenav. deleterange (lastgroup2nodenav );
}

The deletion event mainly deals with the deletion of document library files and the deletion of duplicate table rows in infopath forms.

Publicvoidctrl18_5_clicked (objectsender, clickedeventargse)
{
// Write code here
Strfileurl = E. Source. selectsinglenode ("/My: myfields/My: group6/My: group7/My: fieldurl", namespacemanager). value;
Spsecurity. runwithelevatedprivileges (delegate
{
Try
{
Using (spsitemysite = spsite ("http: // ascentn-Moss: 8080 "))
{
Mysite. allowunsafeupdates = true;
Spwebwebs = mysite. openweb;
Webs. allowunsafeupdates = true;
Webs. GetFile (strfileurl). Delete;
}
}
Catch (exceptionex)
{
Throwex;
}
});
E. Source. deleteself;
}

The basic thing here is that the infopath form design is not mentioned here.