Handling Repeater Control Events : Repeater « Data Binding « ASP.NET Tutorial

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ASP.NET Tutorial » Data Binding » Repeater 
19. 23. 6. Handling Repeater Control Events
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
    string DataKeyName = "Id";
    Hashtable Keys
    {
        get
        {
            if (ViewState["Keys"== null)
                ViewState["Keys"new Hashtable();
            return (Hashtable)ViewState["Keys"];
        }

    }
    protected void rptProducts_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
          ListItemType.AlternatingItem)
        {
            Keys.Add(e.Item.ItemIndex, DataBinder.Eval(e.Item.DataItem, "Id"));
        }
    }
    protected void rptProducts_DataBinding(object sender, EventArgs e)
    {
        Keys.Clear();
    }
    protected void rptProducts_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "Update":
                UpdateProduct(e);
                break;
            case "Insert":
                InsertProduct(e);
                break;
            case "Delete":
                DeleteProduct(e);
                break;
        }
    }
    void UpdateProduct(RepeaterCommandEventArgs e)
    {
        TextBox txtTitle = (TextBox)e.Item.FindControl("txtTitle");
        TextBox txtDirector = (TextBox)e.Item.FindControl("txtDirector");
        CheckBox chkInStock = (CheckBox)e.Item.FindControl("chkInStock");

        srcProducts.UpdateParameters["Id"].DefaultValue = Keys[e.Item.ItemIndex].ToString();
        srcProducts.UpdateParameters["Title"].DefaultValue = txtTitle.Text;
        srcProducts.UpdateParameters["Director"].DefaultValue = txtDirector.Text;
        srcProducts.UpdateParameters["InStock"].DefaultValue = chkInStock.Checked.ToString();
        srcProducts.Update();
    }
    void InsertProduct(RepeaterCommandEventArgs e)
    {
        TextBox txtTitle = (TextBox)e.Item.FindControl("txtTitle");
        TextBox txtDirector = (TextBox)e.Item.FindControl("txtDirector");
        CheckBox chkInStock = (CheckBox)e.Item.FindControl("chkInStock");

        srcProducts.InsertParameters["Title"].DefaultValue = txtTitle.Text;
        srcProducts.InsertParameters["Director"].DefaultValue = txtDirector.Text;
        srcProducts.InsertParameters["InStock"].DefaultValue = chkInStock.Checked.ToString();

        srcProducts.Insert();
    }

    void DeleteProduct(RepeaterCommandEventArgs e)
    {
        srcProducts.DeleteParameters["Id"].DefaultValue = Keys[e.Item.ItemIndex].ToString();
        srcProducts.Delete();
    }

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <form id="form1" runat="server">
    <div class="content">

    <asp:Repeater
        id="rptProducts"
        DataSourceID="srcProducts"
        Runat="server" OnItemCommand="rptProducts_ItemCommand" OnItemDataBound=
          "rptProducts_ItemDataBound" OnDataBinding="rptProducts_DataBinding">
        <HeaderTemplate>
        <table class="products">
        <tr>
            <td>Title</td>
            <td>Director</td>
            <td>In Theaters</td>
        </tr>
        </HeaderTemplate>
        <ItemTemplate>
        <tr>
            <td>
            <asp:TextBox
                id="txtTitle"
                Text='<%#Eval("Title")%>'
                Runat="server" />
            </td>
            <td>
            <asp:TextBox
                id="txtDirector"
                Text='<%#Eval("Director")%>'
                Runat="server" />
            </td>
            <td>
            <asp:CheckBox
                id="chkInStock"
                Checked='<%#Eval("InStock")%>'
                Runat="server" />
            </td>
            <td>
            <asp:LinkButton
                id="lnkUpdate"
                CommandName="Update"
                Text="Update"
                Runat="server" />
            &nbsp;|&nbsp;
            <asp:LinkButton
                id="lnkDelete"
                CommandName="Delete"
                Text="Delete"
                OnClientClick="return confirm('Are you sure?');"
                Runat="server" />
            </td>
        </tr>
        </ItemTemplate>
        <FooterTemplate>
        <tr>
            <td>
            <asp:TextBox
                id="txtTitle"
                Runat="server" />
            </td>
            <td>
            <asp:TextBox
                id="txtDirector"
                Runat="server" />
            </td>
            <td>
            <asp:CheckBox
                id="chkInStock"
                Runat="server" />
            </td>
            <td>
            <asp:LinkButton
                id="lnkInsert"
                CommandName="Insert"
                Text="Insert"
                Runat="server" />
            </td>
        </tr>
        </table>
        </FooterTemplate>
    </asp:Repeater>

    <asp:SqlDataSource
        id="srcProducts"
        ConnectionString="<%$ ConnectionStrings:Products %>"
        SelectCommand="SELECT Id,Title,Director,InStock
            FROM Products"
        UpdateCommand="UPDATE Products SET Title=@Title,
            Director=@Director,InStock=@InStock
            WHERE Id=@Id"
        InsertCommand="INSERT Products (Title,Director,InStock)
            VALUES (@Title,@Director,
        DeleteCommand="DELETE Products WHERE Id=@Id"
        Runat="server">
        <UpdateParameters>
            <asp:Parameter Name="Id" />
            <asp:Parameter Name="Title" />
            <asp:Parameter Name="Director" />
            <asp:Parameter Name="InStock" />
        </UpdateParameters>
        <InsertParameters>
            <asp:Parameter Name="Title" />
            <asp:Parameter Name="Director" />
            <asp:Parameter Name="InStock" />
        </InsertParameters>
        <DeleteParameters>
            <asp:Parameter Name="Id" />
        </DeleteParameters>
    </asp:SqlDataSource>

    </div>
    </form>
</body>
</html>

File: Web.config

<configuration>
  <connectionStrings>
    <add name="Products
         connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  </connectionStrings>
</configuration>
19. 23. Repeater
19. 23. 1. Automatically displays all the pictures in a folder named Photos
19. 23. 2. Displaying Data with the Repeater Control
19. 23. 3. Declarative databinding is used to bind the Repeater to the SqlDataSource
19. 23. 4. Using Templates with the Repeater Control
19. 23. 5. Displaying a tab strip with the Repeater control.
19. 23. 6. Handling Repeater Control Events
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