Apr 15, 2011, 1:08 AM
[CLOSED] [2.0] e.DataHandler.ObjectData and null
Hi,
How can I make e.DataHandler.ObjectData turn string.empty to null?
In my real application, I have a combobox inside the gridview. When I dont select anything, the combobox returns string.empty instead of null.
Bellow is a sample code. To test, just delete a column containing a string.
Thanks
How can I make e.DataHandler.ObjectData turn string.empty to null?
In my real application, I have a combobox inside the gridview. When I dont select anything, the combobox returns string.empty instead of null.
Bellow is a sample code. To test, just delete a column containing a string.
Thanks
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Collections.Generic" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
public class Company
{
public int ID { get; set; }
public string Name { get; set; }
public double Price { get; set; }
public double Change { get; set; }
public double PctChange { get; set; }
public DateTime LastChange { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!X.IsAjaxRequest)
{
this.BindData();
}
}
private void BindData()
{
this.GridPanel1.Store.Primary.DataSource = this.GetData();
this.GridPanel1.Store.Primary.DataBind();
}
private List<Company> GetData()
{
return new List<Company>
{
new Company { ID = 1, Name = "3m Co", Price = 71.72, Change = 0.02, PctChange = 0.03, LastChange = DateTime.Now },
new Company { ID = 2, Name = "Alcoa Inc", Price = 29.01, Change = 0.42, PctChange = 1.47, LastChange = DateTime.Now },
new Company { ID = 3, Name = "Altria Group Inc", Price = 83.81, Change = 0.28, PctChange = 0.34, LastChange = DateTime.Now },
new Company { ID = 4, Name = "American Express Company", Price = 52.55, Change = 0.01, PctChange = 0.02, LastChange = DateTime.Now },
new Company { ID = 5, Name = "American International Group, Inc.", Price = 64.13, Change = 0.31, PctChange = 0.49, LastChange = DateTime.Now },
new Company { ID = 6, Name = "AT&T Inc.", Price = 31.61, Change = -0.48, PctChange = -1.54, LastChange = DateTime.Now },
new Company { ID = 7, Name = "Boeing Co.", Price = 75.43, Change = 0.53, PctChange = 0.71, LastChange = DateTime.Now },
new Company { ID = 8, Name = "Caterpillar Inc.", Price = 67.27, Change = 0.92, PctChange = 1.39, LastChange = DateTime.Now },
new Company { ID = 9, Name = "Citigroup, Inc.", Price = 49.37, Change = 0.02, PctChange = 0.04, LastChange = DateTime.Now },
new Company { ID = 10, Name = "E.I. du Pont de Nemours and Company", Price = 40.48, Change = 0.51, PctChange = 1.28, LastChange = DateTime.Now },
new Company { ID = 11, Name = "Exxon Mobil Corp", Price = 68.1, Change = -0.43, PctChange = -0.64, LastChange = DateTime.Now },
new Company { ID = 12, Name = "General Electric Company", Price = 34.14, Change = -0.08, PctChange = -0.23, LastChange = DateTime.Now },
new Company { ID = 13, Name = "General Motors Corporation", Price = 30.27, Change = 1.09, PctChange = 3.74, LastChange = DateTime.Now },
new Company { ID = 14, Name = "Hewlett-Packard Co.", Price = 36.53, Change = -0.03, PctChange = -0.08, LastChange = DateTime.Now },
new Company { ID = 15, Name = "Honeywell Intl Inc", Price = 38.77, Change = 0.05, PctChange = 0.13, LastChange = DateTime.Now },
new Company { ID = 16, Name = "Intel Corporation", Price = 19.88, Change = 0.31, PctChange = 1.58, LastChange = DateTime.Now },
new Company { ID = 17, Name = "International Business Machines", Price = 81.41, Change = 0.44, PctChange = 0.54, LastChange = DateTime.Now },
new Company { ID = 18, Name = "Johnson & Johnson", Price = 64.72, Change = 0.06, PctChange = 0.09, LastChange = DateTime.Now },
new Company { ID = 19, Name = "JP Morgan & Chase & Co", Price = 45.73, Change = 0.07, PctChange = 0.15, LastChange = DateTime.Now },
new Company { ID = 20, Name = "McDonald\"s Corporation", Price = 36.76, Change = 0.86, PctChange = 2.40, LastChange = DateTime.Now },
new Company { ID = 21, Name = "Merck & Co., Inc.", Price = 40.96, Change = 0.41, PctChange = 1.01, LastChange = DateTime.Now },
new Company { ID = 22, Name = "Microsoft Corporation", Price = 25.84, Change = 0.14, PctChange = 0.54, LastChange = DateTime.Now },
new Company { ID = 23, Name = "Pfizer Inc", Price = 27.96, Change = 0.4, PctChange = 1.45, LastChange = DateTime.Now },
new Company { ID = 24, Name = "The Coca-Cola Company", Price = 45.07, Change = 0.26, PctChange = 0.58, LastChange = DateTime.Now },
new Company { ID = 25, Name = "The Home Depot, Inc.", Price = 34.64, Change = 0.35, PctChange = 1.02, LastChange = DateTime.Now },
new Company { ID = 26, Name = "The Procter & Gamble Company", Price = 61.91, Change = 0.01, PctChange = 0.02, LastChange = DateTime.Now },
new Company { ID = 27, Name = "United Technologies Corporation", Price = 63.26, Change = 0.55, PctChange = 0.88, LastChange = DateTime.Now },
new Company { ID = 28, Name = "Verizon Communications", Price = 35.57, Change = 0.39, PctChange = 1.11, LastChange = DateTime.Now },
new Company { ID = 29, Name = "Wal-Mart Stores, Inc.", Price = 45.45, Change = 0.73, PctChange = 1.63, LastChange = DateTime.Now }
};
}
protected void Save(object sender, BeforeStoreChangedEventArgs e)
{
var vagas = e.DataHandler.ObjectData<Company>();
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Simple Array Grid - Ext.NET Examples</title>
<link href="../../../../resources/css/examples.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
var template = '<span style="color:{0};">{1}</span>';
var change = function (value) {
return String.format(template, (value > 0) ? "green" : "red", value);
};
var pctChange = function (value) {
return String.format(template, (value > 0) ? "green" : "red", value + "%");
};
var startEditing = function (e) {
if (e.getKey() === e.ENTER) {
var grid = GridPanel1,
record = grid.getSelectionModel().getSelected(),
index = grid.store.indexOf(record);
grid.startEditing(index, 1);
}
};
</script>
</head>
<body>
<ext:ResourceManager runat="server" RemoveViewState="true" IDMode="Explicit" />
<h1>Editable GridPanel With Save To [DirectMethod]</h1>
<ext:GridPanel
ID="GridPanel1"
runat="server"
Title="Editable GridPanel"
StripeRows="true"
TrackMouseOver="true"
Width="600"
Height="350"
AutoExpandColumn="Name">
<Store>
<ext:Store ID="Store1" OnBeforeStoreChanged="Save" runat="server">
<Reader>
<ext:JsonReader IDProperty="ID">
<Fields>
<ext:RecordField Name="ID" Type="Int" />
<ext:RecordField Name="Name" />
<ext:RecordField Name="Price" Type="Float" />
<ext:RecordField Name="Change" Type="Float" />
<ext:RecordField Name="PctChange" Type="Float" />
<ext:RecordField Name="LastChange" Type="Date" />
</Fields>
</ext:JsonReader>
</Reader>
</ext:Store>
</Store>
<ColumnModel runat="server">
<Columns>
<ext:Column Header="ID" DataIndex="ID" Width="35" />
<ext:Column ColumnID="Name" Header="Name" DataIndex="Name">
<Editor>
<ext:TextField runat="server" />
</Editor>
</ext:Column>
<ext:Column Header="Price" DataIndex="Price">
<Renderer Format="UsMoney" />
<Editor>
<ext:TextField runat="server" />
</Editor>
</ext:Column>
<ext:Column Header="Change" DataIndex="Change">
<Renderer Fn="change" />
<Editor>
<ext:TextField runat="server" />
</Editor>
</ext:Column>
<ext:Column Header="Change" DataIndex="PctChange">
<Renderer Fn="pctChange" />
<Editor>
<ext:TextField runat="server" />
</Editor>
</ext:Column>
<ext:DateColumn Header="Last Updated" DataIndex="LastChange" Format="yyyy-MM-dd">
<Editor>
<ext:DateField runat="server" />
</Editor>
</ext:DateColumn>
</Columns>
</ColumnModel>
<SelectionModel>
<ext:RowSelectionModel runat="server" SingleSelect="true" />
</SelectionModel>
</ext:GridPanel>
<ext:Button Text="Save" runat="server">
<Listeners>
<Click Handler="alert('2'); #{Store1}.save()" />
</Listeners>
</ext:Button>
</body>
</html>
Last edited by Daniil; Dec 07, 2012 at 4:01 PM.
Reason: [CLOSED] [2.0]