Génération automatique des templates field d'un gridView[Problème avec l'édition]
Bonjour
j'essaie d'afficher les colones de ma source de données d'une façon dynamique à partir de la classe suivante:
Code:
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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Specialized;
using System.Data.SqlClient;
public class DynamicallyTemplatedGridViewHandler : ITemplate
{
#region data memebers
ListItemType ItemType;
string FieldName;
string InfoType;
#endregion
#region constructor
public DynamicallyTemplatedGridViewHandler(ListItemType item_type, string field_name, string info_type)
{
ItemType = item_type;
FieldName = field_name;
InfoType = info_type;
}
#endregion
#region Methods
public void InstantiateIn(System.Web.UI.Control Container)
{
switch (ItemType)
{
case ListItemType.Header:
Literal header_ltrl = new Literal();
header_ltrl.Text = "<b>" + FieldName + "</b>";
Container.Controls.Add(header_ltrl);
break;
case ListItemType.Item:
switch (InfoType)
{
case "Command":
ImageButton edit_button = new ImageButton();
edit_button.ID = "edit_button";
edit_button.ImageUrl = "~/Commun/Images/edit_small.png";
edit_button.CommandName = "Edit";
edit_button.Click += new ImageClickEventHandler(edit_button_Click);
edit_button.ToolTip = "Edit";
Container.Controls.Add(edit_button);
ImageButton delete_button = new ImageButton();
delete_button.ID = "delete_button";
delete_button.ImageUrl = "~/Commun/Images/delete2.png";
delete_button.CommandName = "Delete";
delete_button.ToolTip = "Delete";
//delete_button.OnClientClick = "return confirm('Are you sure to delete the record?')";
Container.Controls.Add(delete_button);
/* Similarly add button for insert.
* It is important to know when 'insert' button is added
* its CommandName is set to "Edit" like that of 'edit' button
* only because we want the GridView enter into Edit mode,
* and this time we also want the text boxes for corresponding fields empty*/
ImageButton insert_button = new ImageButton();
insert_button.ID = "insert_button";
insert_button.ImageUrl = "~/Commun/Images/add2.png";
insert_button.CommandName = "Edit";
insert_button.ToolTip = "Insert";
insert_button.Click += new ImageClickEventHandler(insert_button_Click);
Container.Controls.Add(insert_button);
break;
default:
Label field_lbl = new Label();
field_lbl.Text = String.Empty; //we will bind it later through 'OnDataBinding' event
field_lbl.DataBinding += new EventHandler(OnDataBinding);
Container.Controls.Add(field_lbl);
break;
}
break;
case ListItemType.EditItem:
if (InfoType == "Command")
{
ImageButton update_button = new ImageButton();
update_button.ID = "update_button";
update_button.CommandName = "Update";
update_button.ImageUrl = "~/images/update.gif";
if ((int)new Page().Session["InsertFlag"] == 1)
update_button.ToolTip = "Add";
else
update_button.ToolTip = "Update";
//update_button.OnClientClick = "return confirm('Are you sure to update the record?')";
Container.Controls.Add(update_button);
ImageButton cancel_button = new ImageButton();
cancel_button.ImageUrl = "~/images/cancel.gif";
cancel_button.ID = "cancel_button";
cancel_button.CommandName = "Cancel";
cancel_button.ToolTip = "Cancel";
Container.Controls.Add(cancel_button);
}
else// for other 'non-command' i.e. the key and non key fields, bind textboxes with corresponding field values
{
TextBox field_txtbox = new TextBox();
field_txtbox.Text = String.Empty;
//if Inert is intended no need to bind it with text..keep them empty
if ((int)new Page().Session["InsertFlag"] == (int)EnumInsertFlag.Edit)
field_txtbox.DataBinding += new EventHandler(OnDataBinding);
Container.Controls.Add(field_txtbox);
}
break;
case ListItemType.Footer:
if(InfoType!="Command")
{
TextBox MonTextBox = new TextBox();
MonTextBox.Text = String.Empty;
Container.Controls.Add(MonTextBox);
}
break;
}
}
#endregion
#region Event Handlers
//just sets the insert flag ON so that we ll be able to decide in OnRowUpdating event whether to insert or update
protected void insert_button_Click(Object sender,ImageClickEventArgs e)
{
new Page().Session["InsertFlag"] = (int)EnumInsertFlag.Insert;
}
//just sets the insert flag OFF so that we ll be able to decide in OnRowUpdating event whether to insert or update
protected void edit_button_Click(Object sender, ImageClickEventArgs e)
{
new Page().Session["InsertFlag"] = (int)EnumInsertFlag.Edit;
}
private void OnDataBinding(object sender, EventArgs e)
{
object bound_value_obj = null;
Control ctrl = (Control)sender;
IDataItemContainer data_item_container = (IDataItemContainer)ctrl.NamingContainer;
bound_value_obj = DataBinder.Eval(data_item_container.DataItem, FieldName);
switch (ItemType)
{
case ListItemType.Item:
Label field_ltrl = (Label)sender;
field_ltrl.Text = bound_value_obj.ToString();
break;
case ListItemType.EditItem:
TextBox field_txtbox = (TextBox)sender;
field_txtbox.Text = bound_value_obj.ToString();
break;
}
}
#endregion
} |
pour l'affichage ce code marche à merveille mais qand j'édite ,les données ne s'affiche plus comme si la grille n'est plus Bind(é) ,voici le code Behind de ma page
Code:
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protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ChargerGrilleMoyensFinanciers();
LoadListeMoyensFinancier();
}
}
private void LoadListeMoyensFinancier()
{
UmsProjet ProjetCourant = MonProjetService.RechercherProjetParId(IdProjet);
DataSet1 MonDataSet = MonMoyenFinancierService.RecupererGrilleMoyenFinancier(ProjetCourant);
ListeMoyensFinanciers.DataSource = MonDataSet.maTable;
ListeMoyensFinanciers.DataBind();
IList<UmsRubriqueBudgetaire> MesRubriquesBudgetaires = MaRubriqueBudgetService.Tout();
DropDownList FooterListe = (DropDownList)ListeMoyensFinanciers.FooterRow.FindControl("ListeRubriquesBudgetaires");
FooterListe.DataSource = MesRubriquesBudgetaires;
FooterListe.DataBind();
}
private void ChargerGrilleMoyensFinanciers()
{
UmsProjet ProjetCourant = MonProjetService.RechercherProjetParId(IdProjet);
DataSet1 MonDataSet = MonMoyenFinancierService.RecupererGrilleMoyenFinancier(ProjetCourant);
DataTable UneTable = MonDataSet.maTable;
//ListeMoyensFinanciers.Columns.Clear();
foreach (DataColumn Column in UneTable.Columns)
{
if (Column.ColumnName != "Id" & Column.ColumnName!="Designation")
{
TemplateField MyColumnTemplate = new TemplateField();
MyColumnTemplate.HeaderText = Column.ColumnName;
MyColumnTemplate.ItemTemplate = new DynamicallyTemplatedGridViewHandler(ListItemType.Item, Column.ColumnName, UneTable.Columns[Column.ColumnName].DataType.Name);
MyColumnTemplate.EditItemTemplate = new DynamicallyTemplatedGridViewHandler(ListItemType.EditItem, Column.ColumnName, UneTable.Columns[Column.ColumnName].DataType.Name);
MyColumnTemplate.FooterTemplate = new DynamicallyTemplatedGridViewHandler(ListItemType.Footer, Column.ColumnName, UneTable.Columns[Column.ColumnName].DataType.Name);
ListeMoyensFinanciers.Columns.Add(MyColumnTemplate);
}
}
TemplateField MyButton = new TemplateField();
MyButton.ItemTemplate = new DynamicallyTemplatedGridViewHandler(ListItemType.Item, "CRUD", "Command");
MyButton.EditItemTemplate = new DynamicallyTemplatedGridViewHandler(ListItemType.EditItem, "INSERT", "Command");
ListeMoyensFinanciers.Columns.Add(MyButton);
}
public void Editer_MoyenFinancier(object sender,GridViewEditEventArgs e)
{
int RowIndex = e.NewEditIndex;
ListeMoyensFinanciers.EditIndex = RowIndex;
ListeMoyensFinanciers.Rows[RowIndex].RowState = DataControlRowState.Edit;
ListeMoyensFinanciers.DataBind();
Session["SelecetdRowIndex"] = e.NewEditIndex;
}
public void Supprimer_MoyenFinancier(object sender, GridViewDeleteEventArgs e)
{
ChargerGrilleMoyensFinanciers();
}
public void Annuler_Editer_MoyenFinancier(object sender, GridViewCancelEditEventArgs e)
{
ListeMoyensFinanciers.EditIndex = -1;
ListeMoyensFinanciers.DataBind();
Session["SelecetdRowIndex"] = -1;
}
public void MAJ_MoyenFinancier(object sender, GridViewUpdateEventArgs e)
{
ChargerGrilleMoyensFinanciers();
} |
je suis vraiment bloqué et j'attends vraiment vos remarques
Merci:cry:
