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Trouble with DetailsView, OnItemUpdating

Posted on 2007-12-05
7
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Last Modified: 2012-05-05
Created a Dynamic DetailsView (basically adding bound fields to DetailsView fields) and I'm having trouble using OnItemUpdating command.

I can populate the form but I'm unable to capture any values on the update.
asp:

 

<asp:DetailsView ID="DetailViewEdit" 

   runat="server"

   AutoGenerateRows="false" 

   OnItemUpdating="DetailViewEdit_ItemUpdating"

   AutoGenerateEditButton="true"

   DefaultMode="Edit" 

   />

 

.cs code:

 

..

  BoundField bf = new BoundField();

  bf.DataField = field.Key;

  bf.HeaderText = field.Name;

  

  DetailViewEdit.Fields.Add(bf);

 

DetailViewEdit.DataKeyNames = field.Key

DetailViewEdit.DataSource = referenceDataTable;

DetailViewEdit.DataBind();

 

...

protected void DetailViewEdit_ItemUpdating(object sender, DetailsViewUpdateEventArgs e)

{

 

e.NewValues  <-- empty

e.OldValues  <-- empty

e.Keys <-- empty

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0
Comment
Question by:ebuechel
7 Comments
 
LVL 21

Expert Comment

by:surajguptha
ID: 20415848
what do you want to do in the item updating event? kinda what you are trying to implement using that event?
0
 

Author Comment

by:ebuechel
ID: 20416428
Pulled changed key/value pairs for use in a custom store procedure call.

I could hack the request form - DetailViewEdit.ClientID.Replace('$', '_')  - but that seems a little too sloppy.


        foreach (DictionaryEntry entry in e.NewValues)
        {
              // New Edits, entry.Key : entry.Value

        }
0
 
LVL 10

Expert Comment

by:digitalZo
ID: 20418710
You have to use the DataKey to capture the values.

http://www.mcse.ms/message2536642.html
protected void DetailsView1_ItemUpdating(object sender,
 

DetailsViewUpdateEventArgs e)
 

{
 

int id = (int)DetailsView1.DataKey[0];
 

TextBox txtName = DetailsView1.FindControl("txtName") as TextBox;
 

string newname = txtName.Text;

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Author Comment

by:ebuechel
ID: 20419905
Not sure if that example exactly relates as I'm creating the Bound Fields on the fly:

...
  BoundField bf = new BoundField();
  bf.DataField = field.Key;
  bf.HeaderText = field.Name;
 
  DetailViewEdit.Fields.Add(bf);

DetailViewEdit.DataSource = referenceDataTable;
DetailViewEdit.DataBind();


DetailViewEdit.FindControl(field.Key) as TextBox;  <-- is null
0
 

Author Comment

by:ebuechel
ID: 20425078
http://forums.asp.net/p/1034786/1427427.aspx

Found the solution.


thx.
        for (int i = 0; i < DetailViewEdit.Fields.Count; i++)

        {

            DataControlFieldCell cellNormal = detailsView.Rows[i].Cells[0] as DataControlFieldCell;

            detailsView.Fields[i].ExtractValuesFromCell(e.Keys, cellNormal, DataControlRowState.Normal, true);
 

            DataControlFieldCell cellEdit = detailsView.Rows[i].Cells[1] as DataControlFieldCell;

            detailsView.Fields[i].ExtractValuesFromCell(e.NewValues, cellEdit, DataControlRowState.Edit, false);

        }
 
 

        foreach (string key in e.Keys.Keys)

        {

            Utilities.Log.WriteFileEntry("Key(" + key + ") - Value:" + e.Keys[key], Log.Priority.Medium);

        }
 

        foreach (string key in e.NewValues.Keys)

        {

            Utilities.Log.WriteFileEntry("NewValues Key(" + key + ") - Value:" + e.NewValues[key], Log.Priority.Medium);

        }

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