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EditTemplate problem

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ListView
This is a migrated thread and some comments may be shown as answers.
Jeremy
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Jeremy asked on 21 Jun 2010, 10:27 PM
In my edit template, i am trying to bind the items to the Textbox for editing, this does not work and I am left with a blank textbox.  I am data binding on a datatable.  the item template shows the data correctly, I then have to hit the edit button twice(dunno why) then i see the 3 empty text boxes.  Any help is appreciated.

//Code Behind file
 dt = new DataTable();
            dt.Columns.Add("SummaryID");
            dt.Columns.Add("BegTimeStamp");
            dt.Columns.Add("EndTimeStamp");
            DataRow dr = dt.NewRow();
            dr["SummaryID"] = "Rule 1";
            dr["BegTimeStamp"] = "5/21/2010 6:00:00 AM";
            dr["EndTimeStamp"] = "5/24/2010 6:00:00 PM";
            dt.Rows.Add(dr);

  protected void ruleLV_NeedDataSource(object sender, RadListViewNeedDataSourceEventArgs e)
    {
        ruleLV.DataSource = dt;
    }
//end code behind

<telerik:RadListView ID="ruleLV" runat="server"
                            ItemPlaceholderID="RulePlaceHolder"
                            onneeddatasource="ruleLV_NeedDataSource" Skin="Windows7"
                             onselectedindexchanged="ruleLV_SelectedIndexChanged"
                             onitemcommand="ruleLV_ItemCommand" DataKeyNames="SummaryID"
                            >
                         <LayoutTemplate>
                          <table runat="server" >
                           <tr>
                            <th id="SummaryIdHdr" runat="server" width="150px">Rule ID</th>
                            <th id="BegTimeStampHdr" runat="server" width="200px">Start Date/Time</th>
                            <th id="EndTimeStampHdr" runat="server" width="200px">End Date/Time</th>
                           </tr>
                           
                           <tr id="RulePlaceHolder" runat="server" ></tr>
                          
                          </table>
                           <fieldset style="text-align: center; background-color: white;">
                          
                        </fieldset>
                         </LayoutTemplate>
                            <EditItemTemplate>
                             
                                <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("SummaryID") %>'></asp:TextBox>
                                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("BegTimeStamp") %>'></asp:TextBox>
                                <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("EndTimeStamp") %>'></asp:TextBox>
                            </EditItemTemplate>
                         <ItemTemplate>
                   
                         <tr ID="rules" bgColor="White" runat="server">
                            <td> <%#Eval("SummaryID") %></td>
                            <td> <%#Eval("BegTimeStamp") %></td>
                            <td> <%#Eval("EndTimeStamp") %></td>
                            <td><asp:Button Id="EditButton" Text="Edit" runat="server" CommandName="Edit" /> </td>
                          </tr >
                
                         </ItemTemplate>
                      
                       
                        </telerik:RadListView>

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Rosen
Telerik team
answered on 22 Jun 2010, 11:20 AM
Hi Jeremy,

Can you please post page's full code-behind?

All the best,
Rosen
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Jeremy
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answered on 22 Jun 2010, 02:59 PM
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using APSBusinessLayer;
using Telerik.Web.UI;

public partial class RCMTest : System.Web.UI.Page
{
    DataTable dt;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            PopulateCampaignTree();

            this.Master.SetUserLabel = "Hello, " + Session["User"].ToString();
            dt = new DataTable();
            dt.Columns.Add("SummaryID");
            dt.Columns.Add("BegTimeStamp");
            dt.Columns.Add("EndTimeStamp");
            DataRow dr = dt.NewRow();
            dr["SummaryID"] = "Rule 1";
            dr["BegTimeStamp"] = "5/21/2010 6:00:00 AM";
            dr["EndTimeStamp"] = "5/24/2010 6:00:00 PM";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr["SummaryID"] = "Rule 2";
            dr["BegTimeStamp"] = "5/21/2010 6:00:00 AM";
            dr["EndTimeStamp"] = "5/24/2010 6:00:00 PM";
            dt.Rows.Add(dr);
 
            
        }
    
    }

    private void PopulateCampaignTree()
    {
        rcmTree.Nodes.Clear();
        DataTable propDT = new DataTable();
        SqlConnection sqlConn = GetSqlConn();
        try
        {
            sqlConn.Open();
            PropertyOptions.LoadPropertyOptions(sqlConn, ref propDT);
        }
        catch
        { }
        finally
        {
            sqlConn.Close();
        }

        List<RadTreeNode> siteList = new List<RadTreeNode>();
        RadTreeNode root = new RadTreeNode();
        foreach (DataRow dr in propDT.Rows)
        {
            RadTreeNode rcmNode = new RadTreeNode();
            rcmNode.Text = dr["PropertyID"].ToString();

            Dictionary<string, string> myCampaignDict1 = new Dictionary<string, string>(); ;
            Dictionary<string, string> myColorDict1 = new Dictionary<string, string>();
            try
            {

                sqlConn.Open();
                myCampaignDict1 = APSBusinessLayer.RCM.LoadCampaignNames(sqlConn, dr["PropertyID"].ToString());
                myColorDict1 = APSBusinessLayer.RCM.GetCampaignStatus(sqlConn, dr["PropertyID"].ToString());
            }
            catch { }
            finally
            {
                sqlConn.Close();
            }

            foreach (KeyValuePair<string, string> kvp in myCampaignDict1)
            {
                RadTreeNode campNode = new RadTreeNode(idRb.Checked ? kvp.Key + " (" + kvp.Value + ")" : kvp.Value + " (" + kvp.Key + ")");
                if (myColorDict1.ContainsKey(kvp.Key))
                {
                   
                    switch (myColorDict1[kvp.Key])
                    {
                        case "red":
                            campNode.ForeColor = System.Drawing.Color.Red;
                            break;
                        case "gray":
                            campNode.ForeColor = System.Drawing.Color.Gray;
                            break;
                        case "green":
                            campNode.ForeColor = System.Drawing.Color.Green;
                            break;
                        case "blue":
                            campNode.ForeColor = System.Drawing.Color.Blue;
                            break;
                    }
                }
                rcmNode.Nodes.Add(campNode);
            }
           
            rcmTree.Nodes.Add(rcmNode);
        }
    
       
        
    }


    protected SqlConnection GetSqlConn()
    {
        return new SqlConnection(Session["ConString"].ToString());
    }

    protected void idRb_CheckedChanged(object sender, EventArgs e)
    {
        PopulateCampaignTree();
    }
    protected void nameRB_CheckedChanged(object sender, EventArgs e)
    {
        PopulateCampaignTree();
    }
    protected void addSegmentBtn_Click(object sender, EventArgs e)
    {
        RadTreeNode segmentNode = new RadTreeNode();
        segmentNode.Text = "Segment 1";
        progressiveTree.Nodes.Add(segmentNode);
        segmentNode.Value = segmentNode.GetFullPath("/");
       
    }

    protected void progressiveTree_ContextMenuItemClick(object sender, RadTreeViewContextMenuEventArgs e)
    {
        RadTreeNode clickedNode = e.Node;

        switch (e.MenuItem.Text)
        {
            case "Add Segment":
                RadTreeNode newSegment = new RadTreeNode(string.Format("New Segment {0}",progressiveTree.Nodes.Count + 1));
                progressiveTree.Nodes.Add(newSegment);
                newSegment.Value = newSegment.GetFullPath("/");
                startNodeInEditMode(newSegment.Value);
                break;
            case "Add Multiplier":
                if (clickedNode.ParentNode == null)
                {
                    RadTreeNode newMultiplier = new RadTreeNode("2");
                    clickedNode.Nodes.Add(newMultiplier);
                    clickedNode.Expanded = true;
                    newMultiplier.Value = clickedNode.Value + newMultiplier.Text;
                    startNodeInEditMode(newMultiplier.Value);
                }
                else
                {
                    RadTreeNode newMultiplier = new RadTreeNode("2");
                    clickedNode.ParentNode.Nodes.Add(newMultiplier);
                    newMultiplier.Value = clickedNode.ParentNode.Value + newMultiplier.Text;
                    clickedNode.ParentNode.Expanded = true;
                    startNodeInEditMode(newMultiplier.Value);
                }
                break;

            case "Edit Item":
                startNodeInEditMode(clickedNode.Value);
                break;
            case "Delete Item":
                clickedNode.Remove();
                break;
        }
    }

    private void startNodeInEditMode(string nodeValue)
    {
        //find the node by its Value and edit it when page loads
        string js = "Sys.Application.add_load(editNode); function editNode(){ ";
        js += "var tree = $find(\"" + progressiveTree.ClientID + "\");";
        js += "var node = tree.findNodeByValue('" + nodeValue + "');";
        js += "if (node) node.startEdit();";
        js += "Sys.Application.remove_load(editNode);};";

        RadScriptManager.RegisterStartupScript(Page, Page.GetType(), "nodeEdit", js, true);
    }

    protected void progressiveTree_NodeEdit(object sender, RadTreeNodeEditEventArgs e)
    {
        e.Node.Text = e.Text;
    }
    protected void ruleLV_NeedDataSource(object sender, RadListViewNeedDataSourceEventArgs e)
    {
        ruleLV.DataSource = dt;
    }
    protected void ruleLV_SelectedIndexChanged(object sender, EventArgs e)
    {
    }
    protected void ruleLV_ItemCommand(object sender, RadListViewCommandEventArgs e)
    {
       
    }
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Jeremy
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answered on 22 Jun 2010, 04:50 PM
Error is in the code behind.  Datatable is being reset after each postback because it is created inside of the page.  Moving that out of the !Page.IsPostback condition fixed the problem.  Sorry I am not used to writing extensive web applications.  Thank you for your time.
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Jeremy
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Rosen
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Jeremy
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