winforms tiff

winforms tiff

winforms tiff

winforms tiff

winforms tiff

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Suppose you have a page that displays information according to user preferences. You should use the user profile API only to store preferences, not to store sensitive data. Losing the profile information should never cause the user any loss of money or serious inconvenience. Here s the code you might have at the startup of the page request. The page first grabs in some way some weather-related information and then displays it as configured by the user:

The order detail rows and the order footers (which had the subtotals) are now hidden from view. The table footer still displays and calculates correctly.

protected void Page_Load(Object sender, EventArgs e) { if (!IsPostBack) { var info = GrabWeatherInfo(); DisplayData(info); } } private static WeatherInfo GrabWeatherInfo() { ... } private void DisplayData(WeatherInfo info) { // Type-safe solution for Web Application projects // (reusing the YourApp.UserProfile wrapper class discussed earlier) // Get profile information from the underlying repository var profile = YourApp.UserProfile.GetUserProfile(); // Metric system var speedFormat = "{0} mph"; if (profile.UseEuroMetricSystem) speedFormat = "{0} kmh"; var speedText = String.Format(speedFormat, info.WindSpeed);

You now need to select the events that will be included in the trace . 6. In the Trace Properties dialog box, click the Events Selection tab . Clear all of the events except the following .

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// Temperature var tempText = String.Format("{0} {1}", info.Temperature, profile.TempSystem); lblWindSpeed.Text = speedText; lblTemperature.Text = tempText; // The sample page also displays a panel for users to change settings. // Display current settings through the edit panel as well. chkEuroMetric.Checked = profile.UseEuroMetricSystem; rdlTempSystem.SelectedIndex = (profile.TempSystem == "F" 0 : 1); }

The output of the page can change depending on the settings entered by individual users. Figure 7-7 shows what the same page might look like for distinct users.

If anonymous access is permitted, any unauthenticated user is treated as the same one meaning that all anonymous users share the same settings and any can change in the settings of one user affects all the others. (Most of the time, though, sites where profiles are fundamental just don t allow anonymous access.) How do you change settings Here s the code you can associate with the Save button you see in Figure 7-7:

protected void Button1_Click(Object sender, EventArgs e) { // Retrieve and update the profile for the current user var profile = YourApp.UserProfile.GetUserProfile(); profile.UseEuroMetricSystem = chkEuroMetric.Checked; profile.TempSystem = rdlTempSystem.SelectedItem.Value; // Persist settings for the current user profile.Save(); // Refresh the page to ensure changes are immediately visible Response.Redirect("/profile.aspx"); }

By default, the Events Selection tab does not show you all of the events that can be included in a trace . In particular, some of the events that you will want to use to monitor MDX queries are hidden . 7. In the lower-right corner of the Events Selection tab, select Show All Events . Select the following events .

The Redirect call is not strictly required; however, if it s omitted, it won t give the user an immediate experience based on the changes entered. If you omit the redirect, the changes (which are stored in the repository, anyway) will be visible only upon the next request.

ToggleItem is another property that is assigned to the Visibility category in the Properties window. The value of this property must be a textbox in the report. When the report is rendered, the specified textbox will be displayed with a plus sign. When a user clicks the plus sign, the visibility of the report item is reversed. So, for example, if a detail row is hidden when the report is rendered and its toggle item is a textbox in a header row, when a user clicks that textbox, the detail row is displayed. Conversely, if the detail row is visible, when the user clicks the toggle item, the detail row is hidden. If group footer totals are in the rows that you are hiding when the report initially opens, you might want to include these totals in a visible group header temporarily. You can then use the ToggleItem property for individual cells to hide the totals in the group header when the group footer is visible. In this procedure, you will assign the SalesOrderNumber textbox to the ToggleItem property of both the detail row and table1_Order footer in the table of the Order Detail report.

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