Leave event on TextBox

[guttaboys]

Hi

I would like some code to run when the user exits a textbox control, like the leave event when using winforms.

Is there a way to do this, and if, how?

Would like to recalculate a price when user enters/change the value in the textbox.

Thomas

 

[BoulderBum]

You'd just have a javascript function fire on the onblur event.

In the code-behind you'd set it like:

txtMyTextBox.Attributes.Add( "onblur", "myFunction();" );

The function can be hard-coded into the page (.aspx file), or registered with Page.RegisterClientScriptBlock().

If you're not worried about the performance hit of the PostBack, you may also assign a server-side event handler to the control and set the TextBoxes AutoPostBack property to true.

 

[adamroof]

just to append to boulders post...

this is inside a template column, hence the findcontrols.
If not in datagrid, you can just do cost=myText.Text

<asp:TextBox id=myText runat=server width=50 onTextChanged=calcTotal AutoPostBack=True />

...

in script or codebehind...

    Sub calcTotal(sender As Object, e As EventArgs) Handles calcPrice.Click
    	Dim cost, ship, tax, taxp As Double
    	cost = (CType(singlePO.items(0).FindControl("poCostTxt"), TextBox)).Text
    	If CType(singlePO.items(0).FindControl("poShipTxt"), TextBox).Text = "" Then
    		CType(singlePO.items(0).FindControl("poShipTxt"), TextBox).Text = FormatCurrency(0)
    	End If
    	ship = (CType(singlePO.items(0).FindControl("poShipTxt"), TextBox)).Text
    	taxp = (CType(singlePO.items(0).FindControl("poTaxPTxt"), TextBox)).Text
    	Dim taxTb As TextBox = (CType(singlePO.items(0).FindControl("poTaxTxt"), TextBox))
    	Dim total As TextBox = (CType(singlePO.items(0).FindControl("poTotalTxt"), TextBox))
    	Dim shipTb As TextBox = (CType(singlePO.items(0).FindControl("poShipTxt"), TextBox))
    	Dim costTb As TextBox = (CType(singlePO.items(0).FindControl("poCostTxt"), TextBox))

    	If (CType(singlePO.items(0).FindControl("poTaxCb"), CheckBox)).Checked Then
    		tax = cost * taxp
    		taxTb.Text = FormatCurrency(tax) 
    		total.text = FormatCurrency(cost + ship + tax)
    		costTb.Text = FormatCurrency(costTb.Text)
    		shipTb.Text = FormatCurrency(shipTb.Text)
    	Else
    		taxtb.text = FormatCurrency(0)
    		total.Text = FormatCurrency(cost + ship)
    		costTb.Text = FormatCurrency(costTb.Text)
    		shipTb.Text = FormatCurrency(shipTb.Text)
    	End If
    End Sub