SuspendCalc メソッド

ResumeCalc が呼び出されるまで計算を中断します。

シンタックス

Visual Basic

'宣言
 
Public Sub SuspendCalc() 

C#

public void SuspendCalc()

解説

SuspendCalc は、ResumeCalc が次に呼び出されるまで、UltraCalcManager が実行する自動計算を中断します。

中断するのは、自動的に実行される計算のみです。つまり、タイマーに従って実行される計算 (CalcFrequency が Asynchronous に設定されている場合) と、コントロールの値がダーティになったときの変更通知に従って実行される計算 (CalcFrequency が Synchronous に設定されている場合) は、どちらも中断されます。ReCalc メソッドまたは Infragistics.Win.CalcEngine.IUltraCalcManager.EnsureCalculated(Infragistics.Win.CalcEngine.IUltraCalcReference,System.Boolean) メソッドを明示的に呼び出した場合も計算は実行されます。

SuspendCalcが呼び出されるたびにカウンタが増える点にも注意してください。計算を再開する前に ResumeCalc を同じ回数呼び出す必要があります。

使用例

Visual Basic

Imports Infragistics.CalcEngine
Imports Infragistics.Win.UltraWinCalcManager

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        'Suspend calculation while we are adding new items into the calc network
        Me.UltraCalcManager1.SuspendCalc()

        Dim calcSettings As CalcSettings

        'Set CalcSettings properties on TextBox1
        calcSettings = Me.UltraCalcManager1.GetCalcSettings(Me.textBox1)
        calcSettings.PropertyName = "Text"
        calcSettings.Alias = "Height"
        calcSettings.ErrorValue = 1

        'Set CalcSettings properties on TextBox2
        calcSettings = Me.UltraCalcManager1.GetCalcSettings(Me.textBox2)
        calcSettings.PropertyName = "Text"
        calcSettings.Alias = "Width"
        calcSettings.ErrorValue = 1

        'Create a NamedReference to calulate the area. 
        Dim namedReference As NamedReference
        namedReference = Me.UltraCalcManager1.NamedReferences.Add("Area", "[//Height] * [//Width]")
        namedReference.ErrorValue = "Error"

        'Everything is added, so resume
        Me.UltraCalcManager1.ResumeCalc()

    End Sub

    Private Sub UltraCalcManager1_CalculationsCompleted(ByVal sender As Object, ByVal e As System.EventArgs) Handles UltraCalcManager1.CalculationsCompleted
        If (Me.UltraCalcManager1.NamedReferences.Exists("Area")) Then
            Me.textBox3.Text = Me.UltraCalcManager1.NamedReferences("Area").FormulaResult.Value.ToString()
        End If
    End Sub

C#

using Infragistics.CalcEngine;
using Infragistics.Win.UltraWinCalcManager;


	private void Form1_Load(object sender, System.EventArgs e)
		{
			//Suspend calculation while we are adding new items into the calc network
			this.ultraCalcManager1.SuspendCalc();

			CalcSettings calcSettings = null;

			//Set CalcSettings properties on TextBox1
			calcSettings = this.ultraCalcManager1.GetCalcSettings(this.textBox1);       
			calcSettings.PropertyName = "Text";
			calcSettings.Alias = "Height";
			calcSettings.ErrorValue = 1;
			
			//Set CalcSettings properties on TextBox2
			calcSettings = this.ultraCalcManager1.GetCalcSettings(this.textBox2);       
			calcSettings.PropertyName = "Text";
			calcSettings.Alias = "Width";
			calcSettings.ErrorValue = 1;
			
			//Create a NamedReference to calulate the area. 
			NamedReference namedReference = null;
			namedReference = this.ultraCalcManager1.NamedReferences.Add("Area", "[//Height] * [//Width]");
			namedReference.ErrorValue = "Error";

			//Everything is added, so resume
			this.ultraCalcManager1.ResumeCalc();
		}

		private void ultraCalcManager1_CalculationsCompleted(object sender, System.EventArgs e)
		{
			if ( this.ultraCalcManager1.NamedReferences.Exists("Area") )
			{
				this.textBox3.Text = this.ultraCalcManager1.NamedReferences["Area"].FormulaResult.Value.ToString();
			}
		}