How to get selected terms from Taxonomy web tagging control

Question

I have created a web part in which there is one taxonomy picker control to enable user to select department.

I want to store the selected term to the list column which is of type Managed Metadata.

The declarative part is:

 <tr>
    <td>
        <asp:Label ID="lblProjectOwnerDepartment" runat="server" Text="Owner Department"></asp:Label>
    </td>
    <td>
        <Taxonomy:TaxonomyWebTaggingControl OnLoad="taxProjectOwnerDepartment_Load" ID="taxProjectOwnerDepartment" runat="server" Visible="true" IsDisplayPickerButton="true" IsMulti="false"
              AllowFillIn="false" IsAddTerms="false" IsIncludePathData="false"></Taxonomy:TaxonomyWebTaggingControl>

        </td>
    <td>

        <asp:CustomValidator ID="cvProjectOwnerDepartment" runat="server" OnServerValidate="cvProjectOwnerDepartment_ServerValidate"  />

    </td>
</tr>  

How do I get the terms? I searched over internet but only found the articles to get terms from sharepoint.

Please help.

Answer 1

TaxonomyWebTaggingControl on the server side

TaxonomyWebTaggingControl.Text Property is used to set or get value that represent a Term object

Get values from this control as pairs of labels and GUIDs. The delimiter between a label and a GUID is the | character. When using multiple values, delimit them with a ; character. Example: term1|12345678-1234-1234-1234-123456789012;term2|87654321-4321-4321-4321-210987654321

---

TaxonomyWebTaggingControl on the client side

There is an alternative way to access and manipulate TaxonomyWebTaggingControl from client side Client side

For example to get Taxonomy control value

//Get Taxonomy ControlObject value
//webTaggingId - TaxonomyWebTaggingControl ID  
function getTaxonomyControlObjectValue(webTaggingId) {
    var webTaggingCtl = $get(webTaggingId);
    var taxCtlObj = new Microsoft.SharePoint.Taxonomy.ControlObject(webTaggingCtl);
    var termValue = taxCtlObj.getRawText();
    return termValue;
}

For more details refer this post - Using SharePoint TaxonomyWebTaggingControl control: Access and manipulate from client side

Answer 2

Control Definition

<Taxonomy:TaxonomyWebTaggingControl id="**txtFileType**" runat="server" IsAddTerms="True" IsDisplayPickerButton="True" AllowFillIn="false">

How to call from javascript

var txtFileType = GetTerm("txtFileType");

Javascript function

function GetTerm(controlname) {

    var inputs = document.getElementsByTagName('span');
    for (var i = 0; i < inputs.length; i++) {

        {
            if (inputs[i].id.indexOf(controlname) > 0) {
                var b = inputs[i].getElementsByTagName("input");


                    if(b[0].value == "")    
                        return "";

                    if(b[0].value.indexOf("|") == -1 || b[0].value.indexOf("-2222-2222-2222-") > 0)
                        {
                                alert("Invalid value " + b[0].value.split("|")[0] + ". Please select from list");
                                return "error";
                        }
                return b[0].value.split("|")[0];
            }
        }
    }
}