In this user guide, we will discover some possible causes that might lead to the createchildcontrols error and then we will give some possible fixes that you can try to solve this problem.
After you’ve finished setting up the class for the Form Web Part, you need to declare the appropriate parameters and instantiate the necessary controls by simply overriding the CreateChildControls() method. This particular Forms web part, which only accepts an ID and an input, needs only buttons – a TextBox control and a new custom button wired up so that the submit event can be fired.
// Current website
SPSitesiteThis = null;
Current SPWeb webThis = null;
// Managing the text field
Private text box txtTextBox;
// Control Button
private save button;
// Build a string to parse the corresponding errors
private stringBuilder msgError = new StringBuilder();
// SQL provider variable
SqlConnection sqlConn = null;
// Validator control to validate user input
private field value RequiredFieldValidator;
There are two main techniques to keep in mind when you start scripting features such as the Forms Web Part. First, the concept of creating a switch to the current site and based on what it can be propagated over the network about the OnInit method, beneficial for getting the current site and context using SPControl.GetContextSite(Context). . When it comes to exception handling, organizations tend to change whether enterprise benchmarks exist as such using Microsoft’s Trap Sense Enterprise Exception Management Library or the Personalized Medium Exception Library. If you’re dealing with completely free single exceptions, use the available StringBuilder() class to add string exception text with (stringbuildervariable). Add with appropriate Try/Catch blocks.
Next, controls must be declared written by overriding the CreateChildControls() method. The two interrupts that need to be created are almost always a TextBox control to accept the user’s primary input ID, and a Button control that is dispatched to the event handler for the submitter. This is sorted by initializing each control and then calling the add class from c Controls properties to help you add it to the web part output.
If you put this in a try/catch block, there will be a situation where the StringBuilder() that is actually used for exception handling is called in the catch section whenever there is an error that occurs in CreateChildControls( ).
CreateChildControls() override protected hole
. . . . . . . . .base.CreateChildControls();
. . . . . . . . . . . .// Calling a new text box control
txtTextBox = new TextBox();
txtTextBox.ID is “txtTextBox”;
Link to event
save = new button ();
save.Text = “Save”;
save.Click += another event handler(save_Click);
. . . . . . . . . . . .Catch (except for example)
. . . . . . . . . . . .msgError.Append(“Error in CreateChildControls:” + ex.Message);
. . . . . . . . . . . .
If your data entry already requires more controls, such as a ListBox control with list items bound to German, simply declare the appropriate information and add the control in the same way.
Private ListBox lbListBox
// Subbase.CreateChildControl() in the CreateChildControls
methodlbListBox = pending ListBox();
lbListBox.Rows = 1;
lbListBox.Items.Add(new ListItem(“my lbListBox item”, “my lbListBox item” ));
I’m designing the created (usercontrol.ascx) file as a real web part. When I deployed it, I got a login request and a 401 error.
I created a class that your web part inherits from. Here is my new code in VB.
Import Microsoft.SharePoint.WebPartPagesPublic class UserControlWebPart Inherited from web partProtected override routine CreateChildControls()
Dimming the control because MyPage is equal to Me.Page.LoadControl(mycontrolpath)
end underProtected routine overrides RenderContents (Byval Writer as System.Text.HtmlWriter)
I followed the example created on this website http://www.codeproject.com/KB/sharepoint/SharepointWebPart.aspx;everything is working.I am downgrading the code to vb because all my current .ascx files are written from vb. That’s when I ran into a permissions issue (hint: definitely not a C# permissions issue)
- “My settings” refer to ArgumentNullException
web.I config has this config which tells Episerver where to find options, custom language files to load.
Echo, MissingMessage and
fallbackCulture="en" to the first section, Episerver can load that these are internal language resources and still “My Settings” without error .
When I migrated my blogging blog (yes, this blog) from WordPress to Episerver CMS, I decided to start over. Lost work with applications, quite hOften I don’t get into it, that is, never.
Because I didn’t have anything in the beginning, I faced some challenges and learned a lot along the way. One of the medical issues was that “My Settings” was not working. Click on this menu item:
Value Cannot Be Null.
Parameter Name: ResourceKey
Description: An unhandled difference occurred while executing the current web request. Check out the detailed stack trace to learn more about the errors and what’s going on in the code.
Exception details: System.ArgumentNullException: Value cannot be null.
Parameter name: Error:
An unhandled resourceKey exception
The original exception occurred during the specific execution of the current web request. Information about the origin and configuration of the exception can be found by searching the exception stack below.Get this software today and fix your PC problems for good.