ASPxClientDashboardViewer.BeginUpdateParameters() Method

Locks the ASPxClientDashboardParameters object until the ASPxClientDashboardViewer.EndUpdateParameters method call.

Namespace: DevExpress.DashboardWeb.Scripts

Assembly: DevExpress.Dashboard.v18.2.Web.WebForms.Scripts.dll

Declaration

C#
VB.NET

public void BeginUpdateParameters()

Public Sub BeginUpdateParameters

Remarks

Use the ASPxClientDashboardViewer.GetParameters method to access dashboard parameter settings and metadata.

Example

This example demonstrates how to change dashboard parameter values in the Web Viewer on the client side using the ASPxClientDashboardViewer.GetParameters method.

In this example, current parameter values are specified between the ASPxClientDashboardViewer.BeginUpdateParameters and ASPxClientDashboardViewer.EndUpdateParameters method calls using the ASPxClientDashboardParameter.SetValue method.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-specify-dashboard-parameter-values-on-the-client-side-in-the-web-viewer-t205300.

function specifyParameterValues() {
    var specifyValues = function () {
        var parameters = webViewer.GetParameters();
        var parameter1 = parameters.GetParameterByName("category1");
        var parameter2 = parameters.GetParameterByName("startDate1");
        webViewer.BeginUpdateParameters();
        parameter1.SetValue(parameter1.GetValues()[1].GetValue());
        parameter2.SetValue(new Date(1995, 3, 1));
        webViewer.EndUpdateParameters();
    };

    $("#buttonContainer").dxButton({
        clickAction: specifyValues,
        text: "Specify parameter values"
    });
};

using System;
using DevExpress.DashboardWeb;
using DevExpress.DataAccess.ConnectionParameters;

namespace Dashboard_SetParameterValues_Web {
    public partial class WebForm1 : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
        }

        protected void ASPxDashboardViewer1_ConfigureDataConnection(object sender, 
            ConfigureDataConnectionWebEventArgs e) {
            if (e.DataSourceName == "SQL Data Source 1") {
                // Gets connection parameters used to establish a connection to the database.
                Access97ConnectionParameters parameters =
                    (Access97ConnectionParameters)e.ConnectionParameters;
                string databasePath = Server.MapPath("App_Data/nwind.mdb");

                // Specifies the path to a database file.                    
                parameters.FileName = databasePath;
            }
        }
    }
}

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" 
         Inherits="Dashboard_SetParameterValues_Web.WebForm1" %>

<%@ Register Assembly="DevExpress.Dashboard.v15.1.Web, Version=15.1.7.0, 
                                                       Culture=neutral, 
                                                       PublicKeyToken=b88d1754d700e49a"
    Namespace="DevExpress.DashboardWeb" 
    TagPrefix="dx" %>

<!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></title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="buttonContainer" style="float: left;"></div>
    <div style="display: block; clear: both;"></div>
    <div>
        <dx:ASPxDashboardViewer ID="ASPxDashboardViewer1" runat="server" 
            DashboardSource="~/App_Data/Dashboard.xml"
            onconfiguredataconnection="ASPxDashboardViewer1_ConfigureDataConnection" 
            ClientInstanceName="webViewer"
            ClientSideEvents-Loaded="function() { specifyParameterValues(); }" 
            Width="1200px" Height="600px">
        </dx:ASPxDashboardViewer>
    </div>
    </form>
</body>
</html>
<script type="text/javascript" src="<%= Page.ResolveClientUrl("~/Scripts/ParameterValues.js") %>">
</script>

Imports System
Imports DevExpress.DashboardWeb
Imports DevExpress.DataAccess.ConnectionParameters

Namespace Dashboard_SetParameterValues_Web
    Partial Public Class WebForm1
        Inherits System.Web.UI.Page

        Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        End Sub

        Protected Sub ASPxDashboardViewer1_ConfigureDataConnection(ByVal sender As Object, _
                                           ByVal e As ConfigureDataConnectionWebEventArgs)
            If e.DataSourceName = "SQL Data Source 1" Then
                ' Gets connection parameters used to establish a connection to the database.
                Dim parameters As Access97ConnectionParameters =
                    CType(e.ConnectionParameters, Access97ConnectionParameters)
                Dim databasePath As String = Server.MapPath("App_Data/nwind.mdb")

                ' Specifies the path to a database file.                    
                parameters.FileName = databasePath
            End If
        End Sub
    End Class
End Namespace

function specifyParameterValues() {
    var specifyValues = function () {
        var parameters = webViewer.GetParameters();
        var parameter1 = parameters.GetParameterByName("category1");
        var parameter2 = parameters.GetParameterByName("startDate1");
        webViewer.BeginUpdateParameters();
        parameter1.SetValue(parameter1.GetValues()[1].GetValue());
        parameter2.SetValue(new Date(1995, 3, 1));
        webViewer.EndUpdateParameters();
    };

    $("#buttonContainer").dxButton({
        clickAction: specifyValues,
        text: "Specify parameter values"
    });
};

<%@ Page Language="vb" AutoEventWireup="true" CodeBehind="WebForm1.aspx.vb" 
         Inherits="Dashboard_SetParameterValues_Web.WebForm1" %>

<%@ Register Assembly="DevExpress.Dashboard.v15.1.Web, Version=15.1.7.0, 
                                                       Culture=neutral, 
                                                       PublicKeyToken=b88d1754d700e49a"
    Namespace="DevExpress.DashboardWeb" 
    TagPrefix="dx" %>

<!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></title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="buttonContainer" style="float: left;"></div>
    <div style="display: block; clear: both;"></div>
    <div>
        <dx:ASPxDashboardViewer ID="ASPxDashboardViewer1" runat="server" 
            DashboardSource="~/App_Data/Dashboard.xml"
            onconfiguredataconnection="ASPxDashboardViewer1_ConfigureDataConnection" 
            ClientInstanceName="webViewer"
            ClientSideEvents-Loaded="function() { specifyParameterValues(); }" 
            Width="1200px" Height="600px">
        </dx:ASPxDashboardViewer>
    </div>
    </form>
</body>
</html>
<script type="text/javascript" src="<%=Page.ResolveClientUrl("~/Scripts/ParameterValues.js")%>">
</script>

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ASPxClientDashboardViewer.BeginUpdateParameters() Method

Declaration

Remarks

Example