ASPxClientCardView.GetColumnCount Method
Returns the number of columns within the client grid.
Declaration
GetColumnCount(): numberReturns
| Type | Description |
|---|---|
| number | An integer value that specifies the number of columns within the client grid. |
Example
The example demonstrates how to dynamically disable editors on an Edit Form when an editor’s value is changed.This approach cannot be used when edit templates are defined.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/aspxcardview-how-to-iterate-through-column-editors-on-the-client-t338569
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="DevExpress.Web.v15.2, Version=15.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" Namespace="DevExpress.Web" TagPrefix="dx" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dx:ASPxCardView ID="ASPxCardView1" ClientInstanceName="grid" OnCardUpdating="ASPxCardView1_CardUpdating" OnCellEditorInitialize="ASPxCardView1_CellEditorInitialize" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" KeyFieldName="ProductID">
<Columns>
<dx:CardViewTextColumn FieldName="ProductID" ReadOnly="True" Visible="False">
</dx:CardViewTextColumn>
<dx:CardViewTextColumn FieldName="UnitPrice" VisibleIndex="0">
</dx:CardViewTextColumn>
<dx:CardViewTextColumn FieldName="UnitsInStock" VisibleIndex="1">
</dx:CardViewTextColumn>
<dx:CardViewTextColumn FieldName="UnitsOnOrder" VisibleIndex="2">
</dx:CardViewTextColumn>
<dx:CardViewCheckColumn FieldName="Discontinued" VisibleIndex="3">
<PropertiesCheckEdit>
<ClientSideEvents CheckedChanged="function(s, e) {
for(i = 0; i < grid.GetColumnCount(); i++) {
var editor = grid.GetEditor(i);
if(editor != null && editor != s)
editor.SetEnabled(s.GetChecked());
} }" />
</PropertiesCheckEdit>
</dx:CardViewCheckColumn>
</Columns>
<CardLayoutProperties>
<Items>
<dx:CardViewCommandLayoutItem HorizontalAlign="Right" ShowEditButton="True">
</dx:CardViewCommandLayoutItem>
<dx:CardViewColumnLayoutItem ColumnName="UnitPrice">
</dx:CardViewColumnLayoutItem>
<dx:CardViewColumnLayoutItem ColumnName="UnitsInStock">
</dx:CardViewColumnLayoutItem>
<dx:CardViewColumnLayoutItem ColumnName="UnitsOnOrder">
</dx:CardViewColumnLayoutItem>
<dx:CardViewColumnLayoutItem ColumnName="Discontinued">
</dx:CardViewColumnLayoutItem>
<dx:EditModeCommandLayoutItem HorizontalAlign="Right">
</dx:EditModeCommandLayoutItem>
</Items>
</CardLayoutProperties>
</dx:ASPxCardView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\nwind.mdb;Persist Security Info=True" DeleteCommand="DELETE FROM [Products] WHERE [ProductID] = ?" InsertCommand="INSERT INTO [Products] ([ProductID], [UnitPrice], [UnitsInStock], [UnitsOnOrder], [Discontinued]) VALUES (?, ?, ?, ?, ?)" ProviderName="System.Data.OleDb" SelectCommand="SELECT [ProductID], [UnitPrice], [UnitsInStock], [UnitsOnOrder], [Discontinued] FROM [Products]" UpdateCommand="UPDATE [Products] SET [UnitPrice] = ?, [UnitsInStock] = ?, [UnitsOnOrder] = ?, [Discontinued] = ? WHERE [ProductID] = ?">
<DeleteParameters>
<asp:Parameter Name="ProductID" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="ProductID" Type="Int32" />
<asp:Parameter Name="UnitPrice" Type="Decimal" />
<asp:Parameter Name="UnitsInStock" Type="Int16" />
<asp:Parameter Name="UnitsOnOrder" Type="Int16" />
<asp:Parameter Name="Discontinued" Type="Boolean" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="UnitPrice" Type="Decimal" />
<asp:Parameter Name="UnitsInStock" Type="Int16" />
<asp:Parameter Name="UnitsOnOrder" Type="Int16" />
<asp:Parameter Name="Discontinued" Type="Boolean" />
<asp:Parameter Name="ProductID" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
See Also