Copying custom field value in a Work Item Custom Control in TFS2010

Question

I have created a custom control for TWA, which has to show entered values of a custom field in it at various state changes. I mean the custom control should show all the revisions of custom field data together at once place. I am able to hold the text, but Text in custom control is repeating twice. Please check the code and suggest if any changes.

namespace CommentsControl

{

[ToolboxData("<{0}:CommentsControl runat=server></{0}:CommentsControl>")]

public class CommentsControl : WebControl, IWorkItemControl, IWorkItemWebControl//BaseWorkItemWebControl

{

#region Fields

private string m_label;

private string m_editorObject;

private string m_themeUrl;

private string m_controlId;

private System.Collections.Specialized.StringDictionary m_properties;

private bool m_readOnly;

private IServiceProvider m_site;

private string m_workItemFieldName;

private WorkItem m_dataSource;

private bool m_initialized = false;

private TextBox m_field;

public String commentsText;

public CommentsControl()

{

}

#region IWorkItemControl Members

private static object EventBeforeUpdateDatasource = new object();

public event EventHandler BeforeUpdateDatasource

{

add { Events.AddHandler(EventBeforeUpdateDatasource, value); }

remove { Events.RemoveHandler(EventBeforeUpdateDatasource, value); }

} 

protected virtual void OnBeforeUpdateDatasource(EventArgs eventArgs)

{

EventHandler handler = (EventHandler)Events[EventBeforeUpdateDatasource];

if (handler != null)

{

handler.Invoke(this, eventArgs);

}

}

private static object EventAfterUpdateDatasource = new object();

public event EventHandler AfterUpdateDatasource

{

add { Events.AddHandler(EventAfterUpdateDatasource, value); }

remove { Events.RemoveHandler(EventAfterUpdateDatasource, value); }

}

public void Clear()

{

this.Value = "";

}

public void FlushToDatasource()

{

}

public void InvalidateDatasource()

{

this.m_field.Text = m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value.ToString();

}

public System.Collections.Specialized.StringDictionary Properties

{

get

{

return m_properties;

}

set

{

m_properties = value;

}

}

public bool ReadOnly

{

get

{

return m_readOnly;

}

set

{

m_readOnly = value;

}

}

public void SetSite(IServiceProvider serviceProvider)

{

m_site = serviceProvider;

}

public object WorkItemDatasource

{

get { return m_dataSource; }

set

{

m_dataSource = (WorkItem)value;

if (m_dataSource != null)

{

m_dataSource.FieldChanged += new WorkItemFieldChangeEventHandler(WIChanged);

}

}

 

}

void WIChanged(object sender, WorkItemEventArgs e)

{

try

{

if (e.Field.ReferenceName == "Microsoft.VSTS.Common.Comment")

{

try

{

m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value = m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value + "\n" + m_dataSource.Fields["Microsoft.VSTS.Common.Comment"].Value.ToString();

}

catch { m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value = ""; }

m_field.Text = "";}

}

catch { }

}

public string WorkItemFieldName

{

get

{

return m_workItemFieldName;

}

set

{

m_workItemFieldName = value;

}

}

#endregion

#region IWorkItemWebControl Members

public string ClientEditorObjectId

{

get

{

return m_label;

}

set

{

m_label = Label;

}

}

public string ClientObjectId

{

get;

set;

}

public string ControlId

{

get

{

return m_controlId;

}

set

{

m_controlId = value;

}

}

public string GetClientUpdateScript()

{

return string.Empty;

}

public void InitializeControl()

{

InitControl();

}

public string Label

{ get; set; }

public string ThemeUrl

{ get; set; }

public string Value

{

get

{

this.InitControl();

return m_field.Text;

}

set

{

this.InitControl();

m_field.Text = value;

}

}

private void InitControl()

{

if (m_initialized)

return;

base.Controls.Clear();

m_field = new TextBox();

m_field.ID = "Tab";

m_field.Text += new EventHandler(this.OnCheckedChanged); //"ABCDEDD";//

m_field.TextMode = TextBoxMode.MultiLine;

base.Controls.Add(m_field);

m_initialized = true;

}

void OnCheckedChanged(object sender, EventArgs e)

{

this.FlushToDatasource();

}

#endregion

}

}

 

Answer 1

H!

I got this worked. I have placed the below lines of code in Page.Postback.

if(!Page.IsPostBack)

{

if (e.Field.ReferenceName == "Microsoft.VSTS.Common.Comment")

{

try

{

m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value = m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value + "\n" + m_dataSource.Fields["Microsoft.VSTS.Common.Comment"].Value.ToString();

}

catch { m_dataSource.Fields["Microsoft.VSTS.Common.SaveComments"].Value = ""; }

m_field.Text = "";}

}

}

Answer 2

Hi Chandu,

I am trying to create a custom web access work item control which has s dropdown which populates from another work item field value.

I believe there should be some post back involved to capture the value entered in the parent control however I am not able to get that using the standard code.

Can you throw soem light here?

Thanks

:D

Answer 3

Hi,

You may use some Java script to implement the scenario with in the code to handle the Java script. Could you please share me the code so that i can suggest any changes in it.

Thanks,

Chandu

Answer 4

Hi Chandu,

So my scenario is this -

I have two custom dropdown fields on the workitem

1. Project Cycle

2. Project Name

Now when a user selects project cycle, the project names should be populated from a service which returns all the projects based on the particular cycle.

I tried this on Team Explorer WI and could easily get it done but am stuck with the web one as it doesnt seem to fire a server side request when Project cycle is selected.

Can you tell me how you handled that?

Thanks

:D

Answer 5

Hey Chnadu,

So i resolved my issue with auto postback.

Dint realise we could use the standard event handlers on the web controls to manipulate the data populated.

Thanks anyways,

:D