Jun 21, 2013, 6:21 AM
Several issues about OnBeforeStoreChanged application within Ext.net 2.2
Hi Ext support team, recently I confronted several issues on OnBeforeStoreChanged applied within Ext.net 2.2.0.40838 for GridPanel grid data add&edit saving, the implementation was based on the example in Ext.net page (https://examples2.ext.net/#/GridPane...reCustomLogic/).
Since there is few reference illustration about OnBeforeStoreChanged can be found from internet, open this thread to ask your kindly help.
Below are the detail issue specifications.
ISSUE 1. Refresh button click will result in the gridpanel become blank. Is it OK invoke store.Reload() to refresh the gridpanel? If not, how can I implement the refresh function?
ISSUE 2. Once a new record added and click Save button, an exception will pop up each time whose content is
{serviceResponse:{success:false,message:"System.Ex ception: Key value is not defined for inserted record ---> System.Exception: Key value is not defined for inserted record\r\n at Ext.Net.Store.InsertCallback(Int32 recordsAffected, Exception exception)\r\n at Ext.Net.Store.MakeInsertes(IDataSource ds, JArray data)\r\n at Ext.Net.Store.MakeChanges()\r\n at Ext.Net.Store.DoSaving(String action, String jsonData, JToken parameters)\r\n --- End of inner exception stack trace ---\r\n at Ext.Net.Store.DoSaving(String action, String jsonData, JToken parameters)\r\n at Ext.Net.Store.RaiseAjaxPostBackEvent(String eventArgument)"}}
But the new item is added in the DB. How to fix this exception?
ISSUE 3. The Clear button cannot work expectedly
ISSUE 4. If some check on the submitted item, such as empty text, unaccepted characters and so on. Where it should be added?
************************************************** ******************************
DB table definition:
NewTestDB.designer.cs
Test.aspx
Since there is few reference illustration about OnBeforeStoreChanged can be found from internet, open this thread to ask your kindly help.
Below are the detail issue specifications.
ISSUE 1. Refresh button click will result in the gridpanel become blank. Is it OK invoke store.Reload() to refresh the gridpanel? If not, how can I implement the refresh function?
ISSUE 2. Once a new record added and click Save button, an exception will pop up each time whose content is
{serviceResponse:{success:false,message:"System.Ex ception: Key value is not defined for inserted record ---> System.Exception: Key value is not defined for inserted record\r\n at Ext.Net.Store.InsertCallback(Int32 recordsAffected, Exception exception)\r\n at Ext.Net.Store.MakeInsertes(IDataSource ds, JArray data)\r\n at Ext.Net.Store.MakeChanges()\r\n at Ext.Net.Store.DoSaving(String action, String jsonData, JToken parameters)\r\n --- End of inner exception stack trace ---\r\n at Ext.Net.Store.DoSaving(String action, String jsonData, JToken parameters)\r\n at Ext.Net.Store.RaiseAjaxPostBackEvent(String eventArgument)"}}
ISSUE 3. The Clear button cannot work expectedly
ISSUE 4. If some check on the submitted item, such as empty text, unaccepted characters and so on. Where it should be added?
************************************************** ******************************
DB table definition:
NewTestDB.designer.cs
[global::System.Data.Linq.Mapping.TableAttribute(Name="dbo.Department")]
public partial class Department : INotifyPropertyChanging, INotifyPropertyChanged
{
private static PropertyChangingEventArgs emptyChangingEventArgs = new PropertyChangingEventArgs(String.Empty);
private int _ID;
private string _Name;
#region
partial void OnLoaded();
partial void OnValidate(System.Data.Linq.ChangeAction action);
partial void OnCreated();
partial void OnIDChanging(int value);
partial void OnIDChanged();
partial void OnNameChanging(string value);
partial void OnNameChanged();
#endregion
public Department()
{
OnCreated();
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_ID", AutoSync=AutoSync.OnInsert, DbType="Int NOT NULL IDENTITY", IsPrimaryKey=true, IsDbGenerated=true)]
public int ID
{
...
}
[global::System.Data.Linq.Mapping.ColumnAttribute(Storage="_Name", DbType="VarChar(40) NOT NULL", CanBeNull=false)]
public string Name
{
...
}Test.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="DMS.pages.Test" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<html>
<head id="Head1" runat="server">
<title>A Test Page</title>
</head>
<body>
<ext:ResourceManager ID="ResourceManager1" runat="server" />
<ext:Viewport ID="Viewport1" runat="server">
<LayoutConfig>
<ext:VBoxLayoutConfig Align="Center" Pack="Center" />
</LayoutConfig>
<Items>
<ext:Container ID="Container1"
runat="server"
StyleSpec="background:transparent;"
Margins="0 0 10 0">
<LayoutConfig>
<ext:TableLayoutConfig Columns="4" />
</LayoutConfig>
<Defaults>
<ext:Parameter Name="Width" Value="265" Mode="Raw" />
<ext:Parameter Name="Height" Value="370" Mode="Raw" />
<ext:Parameter Name="Margin" Value="10" Mode="Raw" />
</Defaults>
<Items>
<%-- Panel1 --%>
<ext:Panel runat="server" Collapsible="true" Width="450" ColSpan="2" Title="Panel1" Layout="FitLayout"/>
<%-- Panel2 --%>
<ext:Panel runat="server" Collapsible="true" Width="450" ColSpan="2" Title="Panel2" Layout="FitLayout"/>
<%-- Panel3 --%>
<ext:Panel runat="server" Collapsible="true" Title="Panel3" TitleAlign="Left" Layout="FitLayout"/>
<%-- Panel4 --%>
<ext:Panel ID="pSSPlatfom" runat="server" Collapsible="true" Title="Panel4" TitleAlign="Left" Layout="FitLayout"/>
<%-- Department --%>
<ext:Panel ID="pSSDepartment" runat="server" Collapsible="true" Title="Department" TitleAlign="Left" Layout="FitLayout">
<TopBar>
<ext:Toolbar runat="server">
<Items>
<ext:Button runat="server" Icon="Add" Text="Insert">
<Listeners>
<Click Handler="#{storeDepartment}.insert(0, {}); #{gridpanelDepartment}.editingPlugin.startEditByPosition({row:0, column:1});" />
</Listeners>
</ext:Button>
<ext:ToolbarSeparator runat="server" />
<ext:Button runat="server" ID="btnSave" Icon="Disk" Text="Save">
<Listeners>
<Click Handler="#{storeDepartment}.sync();" />
</Listeners>
</ext:Button>
<ext:ToolbarSeparator runat="server" />
<ext:Button runat="server" Icon="Cancel" Text="Clear">
<Listeners>
<Click Handler="#{gridpanelDepartment}.getSelectionModel().deselectAll();" />
</Listeners>
</ext:Button>
<ext:ToolbarSeparator runat="server" />
<ext:Button runat="server" Icon="ArrowRefresh" Text="Refresh">
<DirectEvents>
<Click OnEvent="Refresh">
<ExtraParams>
<ext:Parameter Name="Type" Value="Department" Mode="Value" />
</ExtraParams>
</Click>
</DirectEvents>
</ext:Button>
</Items>
</ext:Toolbar>
</TopBar>
<Items>
<ext:GridPanel runat="server" ID="gridpanelDepartment" AutoScroll="true">
<Store>
<ext:Store runat="server" ID="storeDepartment" OnBeforeStoreChanged="Dept_BeforeChange">
<Model>
<ext:Model ID="Model4" runat="server" IDProperty="ID">
<Fields>
<ext:ModelField Name="ID" Type="Int" />
<ext:ModelField Name="Name" Type="String" />
</Fields>
</ext:Model>
</Model>
<Sorters>
<ext:DataSorter Property="ID" Direction="ASC" />
</Sorters>
<Listeners>
<Write Handler="Ext.Msg.alert('Success', 'Data have been saved');" />
</Listeners>
</ext:Store>
</Store>
<ColumnModel ID="ColumnModel4" runat="server">
<Columns>
<ext:RowNumbererColumn runat="server" />
<ext:Column runat="server" ID="Column4" DataIndex="Name" Flex="1">
<Editor>
<ext:TextField runat="server" MinLength="2" />
</Editor>
</ext:Column>
</Columns>
</ColumnModel>
<View>
<ext:GridView ID="GridView4" runat="server" StripeRows="true" TrackOver="true" LoadMask="true" LoadingText="Department data loading..."/>
</View>
<SelectionModel>
<ext:RowSelectionModel ID="RowSelectionModel4" runat="server" Mode="Single" />
</SelectionModel>
<Plugins>
<ext:CellEditing runat="server" />
</Plugins>
</ext:GridPanel>
<ext:ToolTip ID="ToolTip1" runat="server" Target="={#{gridpanelDepartment}.getView().el}" Html="Double click to edit" TrackMouse="true"/>
</Items>
</ext:Panel>
</Items>
</ext:Container>
</Items>
</ext:Viewport>
</body>
</html>protected void Dept_BeforeChange(object sender, BeforeStoreChangedEventArgs e)
{
string json = e.DataHandler.JsonData;
NewDMSDBDataContext db = new NewDMSDBDataContext();
System.Data.Common.DbTransaction trans = null;
StoreDataHandler dataHandler = new StoreDataHandler(json);
List<Department> data = dataHandler.ObjectData<Department>();
try
{
if (db.Connection.State != System.Data.ConnectionState.Open)
{
db.Connection.Open();
}
trans = db.Connection.BeginTransaction();
db.Transaction = trans;
foreach (Department dept in data)
{
switch (e.Action)
{
case StoreAction.Destroy:
db.Department.Attach(dept);
db.Department.DeleteOnSubmit(dept);
break;
case StoreAction.Update:
db.Department.Attach(dept);
db.Refresh(RefreshMode.KeepCurrentValues, dept);
break;
case StoreAction.Create:
db.Department.InsertOnSubmit(dept);
break;
}
}
db.SubmitChanges(System.Data.Linq.ConflictMode.FailOnFirstConflict);
trans.Commit();
trans.Dispose();
db.Connection.Close();
if (e.Action != StoreAction.Destroy)
{
foreach (Department dept in data)
{
e.ResponseRecords.Add(dept);
}
}
}
catch (Exception exp)
{
if (trans != null)
{
trans.Rollback();
X.Msg.Show(new MessageBoxConfig
{
Title = "Error",
Message = exp.Message,
Buttons = MessageBox.Button.OK,
Icon = MessageBox.Icon.ERROR
});
}
trans.Dispose();
db.Connection.Close();
}
}
[DirectMethod]
protected void Refresh(object sender, DirectEventArgs e)
{
string sType = e.ExtraParams["Type"];
switch (sType)
{
case "Department":
storeDepartment.Reload();
break;
case "Panel1":
storePanel1.Reload();
break;
}
}
Last edited by kfc427; Jun 21, 2013 at 6:24 AM.
Originally Posted by kfc427
