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Trouble with DetailsView, OnItemUpdating

Posted on 2007-12-05
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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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Question by:ebuechel
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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?
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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

        }
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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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