adding user controls to webform
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Is it possible to add user controls to a webform by extending the URL. for example. The datalist menu has a url of http://localhost/touchofglass/Glass.aspx?SubCatID=1990&selection=2 I want to add user controls to this page displaying product information. possibly using a placeholder and a .ascx file??? but the url would be http://localhost/touchofglass/Glass.aspx?SubCatID=1990&selection=2&ProductID=120&selection=40 The product info has been added to the url. This way the original datalist menu stays on the page together with new user controls Is this known as a postback method? Thanks in advance!
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Is it possible to add user controls to a webform by extending the URL. for example. The datalist menu has a url of http://localhost/touchofglass/Glass.aspx?SubCatID=1990&selection=2 I want to add user controls to this page displaying product information. possibly using a placeholder and a .ascx file??? but the url would be http://localhost/touchofglass/Glass.aspx?SubCatID=1990&selection=2&ProductID=120&selection=40 The product info has been added to the url. This way the original datalist menu stays on the page together with new user controls Is this known as a postback method? Thanks in advance!
Hi there. You could already have your
UserControldeclared in aPanelwithVisible=false, then upon page load testRequest.QueryString["ProductID"]to determine its passed in value. If a legitimate ProductID is passed in, you could set thePanel.Visibleto true and populate theUserControlas necessary. Or, instead of declaring yourUserControl, you could also put aPlaceHoldercontrol on your page where theUserControlwould be created, then create it in code with theLoadControlmethod. Something like this:void Page_Init(object sender, EventArgs e)
{
if (Request.QueryString["ProductID"] != "")
{
MyUserControl u = (MyUserControl) LoadControl("myUserControl.ascx");
myPlaceHolder.Controls.Add(u);
// ... populate the MyUserControl object with data ...
}
} -
Hi there. You could already have your
UserControldeclared in aPanelwithVisible=false, then upon page load testRequest.QueryString["ProductID"]to determine its passed in value. If a legitimate ProductID is passed in, you could set thePanel.Visibleto true and populate theUserControlas necessary. Or, instead of declaring yourUserControl, you could also put aPlaceHoldercontrol on your page where theUserControlwould be created, then create it in code with theLoadControlmethod. Something like this:void Page_Init(object sender, EventArgs e)
{
if (Request.QueryString["ProductID"] != "")
{
MyUserControl u = (MyUserControl) LoadControl("myUserControl.ascx");
myPlaceHolder.Controls.Add(u);
// ... populate the MyUserControl object with data ...
}
}Thanks for your quick response! I'm gonna use a placeholder and then load in the web controls with data from product database. My next question would be; My datalist is using Imagebuttons but as their is no NavigateURL property on an Imagebutton would I be able to do a postback using this? I think I use a Hyperlink Control, is this correct? and from the Navigate URL property i could use request.querystring to load the correct data into web controls? sorry to be a pain! Thanks Jetset
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Thanks for your quick response! I'm gonna use a placeholder and then load in the web controls with data from product database. My next question would be; My datalist is using Imagebuttons but as their is no NavigateURL property on an Imagebutton would I be able to do a postback using this? I think I use a Hyperlink Control, is this correct? and from the Navigate URL property i could use request.querystring to load the correct data into web controls? sorry to be a pain! Thanks Jetset
Hi there. So I'm getting that your user would click the image link in the datalist, which would open a new page that would load the UserControl and display the details, yes? I think the approach you're talking about here would work for that. You might also consider looking into the DataList.ItemCommand[^] event.
ItemCommandfires when a button has been clicked in the DataList. You could code an event handler for theItemCommand, determine which item has been clicked using theDataListCommandEventArgsobject passed to the handler, and show & populate an otherwise hiddenUserControlalready declared on the DataList's page (rather than link to a second page). Just another approach. -
Hi there. So I'm getting that your user would click the image link in the datalist, which would open a new page that would load the UserControl and display the details, yes? I think the approach you're talking about here would work for that. You might also consider looking into the DataList.ItemCommand[^] event.
ItemCommandfires when a button has been clicked in the DataList. You could code an event handler for theItemCommand, determine which item has been clicked using theDataListCommandEventArgsobject passed to the handler, and show & populate an otherwise hiddenUserControlalready declared on the DataList's page (rather than link to a second page). Just another approach.