January 2009

Ever thought of creating files on the fly (say by typing contents  in a textbox) and saving them to the document library? refer to my previous post https://techolyvia.wordpress.com/2009/01/13/how-to-create-files-dynamically-and-save-that-in-document-library/ which talks about this.

Now, if we want to edit the uploaded data, we need to read the content from the document library and show the content in the textbox. So, how do we do that? See the code below:

SPSite ospSite = SPContext.Current.Site;
SPWeb ospWeb = ospSite.OpenWeb();
/*docPath returns the url of the file as sharepoint url/document library/filename*/
string docPath = Request.QueryString[“Path”];
SPFile tempFile = ospWeb.GetFile(docPath);
/*OpenBinaryStream() opens the file as a stream*/
StreamReader reader = new StreamReader(tempFile.OpenBinaryStream());
/*txtUpload is the textbox control where we insert the value of the text file*/
txtUploadText.Text = reader.ReadToEnd();

So, we use StreamReader to read the content of the text file in document library and display the content in a Multiline Textbox, so that the user can  edit the content of the textfile.

For details refer to http://www.dotnetspider.com/forum/189095-Read-file-content-from-document-library-write-textbox.aspx


One of my colleague was using a treeview. He was not able to get the value of the node selected in a checkbox,the nodes were rendering in a td,say the name of the node is Apple and name of the treeview is tview :-

<td><div style=”width:20px;height:1px”></div></td><td><a id=”tviewn1″ href=”javascript:TreeView_ToggleNode(tview_Data,1,tviewn1,’ ‘,tviewn1Nodes)”><img  alt=”Expand Apple” style=”border-width:0;” /></a></td><td style=”white-space:nowrap;”><input type=”checkbox” name=”tviewn1CheckBox” id=”tviewn1CheckBox” /><span class=”tview_0″ id=”tviewt1″>Apple</span></td>

The javascript to get the node name in this case will be :-

function getSelectedNodeValue()
var storeTemp = ”;
var x=document.getElementsByTagName(“td”);
for(var i=0;i
var srch=x[i].innerHTML;
{/storeTemp += x[i].innerText + ‘,’; }
storeTemp = storeTemp.substring(0,storeTemp.lastIndexOf(‘,’));

Refer to http://www.dotnetspider.com/resources/24242-how-get-value-selected-node-treeview.aspx

The other day, I was working on how to create files on the fly(dynamically create any file of any extension like .doc, .txt etc.). To do this, we will first have to provide an editor like rich text box where the user can type in something and when he saves,a dynamic file is created which is saved in the document library.
I used a FCK editor in this case.

I intended to save other meta data along with the file in the document library(will talk about it later in this article).

string strRTFFileName = string.Empty;
SPList ospList = null;
Hashtable metadataTable = new Hashtable();
MemoryStream mstream = new MemoryStream();
Stream stream = null;
SPWeb ospWeb = ospSite.OpenWeb();
string strReader = string.Empty;
SPWeb sourceWeb = SPContext.Current.Web;
string sourceList = “Brochure”; //Name of Document library to save file.
SPList sourceListObj = sourceWeb.Lists[sourceList];

//Declare a streamwriter and output it’s value to memory stream
StreamWriter sw = new StreamWriter(mstream);
//FCKeditor1 is name of the FCK Editor.
// Creating file name dynamically based on datetime value

strRTFFileName = string.Format(“text-{0:yyyy-MM-dd_hh-mm-ss-tt}.rtf”, DateTime.Now);
string pattern = “[^a-z0-9A-Z. ]”;
Regex objRegex = new Regex(pattern);
strRTFFileName = objRegex.Replace(strRTFFileName, “”);

// End of dynamic file name creation

// On flushing StreamWriter, value is copied to memorystream.
byte[] contents = new byte[mstream.Length];
mstream.Read(contents, 0, (int)mstream.Length);

ospWeb.AllowUnsafeUpdates = true;
sourceItem = sourceWeb.Files.Add(sourceWeb.Url + “/” + sourceListObj.RootFolder.ToString() + “/” + strRTFFileName, mstream, true);