An instance demonstrating the usage of RegisterClientScriptBlock:
Page.ClientScript.RegisterClientScriptBlock(MyType, "key","scriptblock", True)
Can anyone explain why the method requires the type as the initial parameter?
Appreciate it.
An instance demonstrating the usage of RegisterClientScriptBlock:
Page.ClientScript.RegisterClientScriptBlock(MyType, "key","scriptblock", True)
Can anyone explain why the method requires the type as the initial parameter?
Appreciate it.
According to the MSDN documentation, a client script is distinguished by both its key and type. Scripts sharing the same key and type are seen as duplicates.
This feature offers an alternative method for identifying scripts uniquely. You can use the same key value for scripts assigned to different types of controls.
This question has lingered in my mind as well. Upon inspecting with Reflector, it appears that the value is not directly utilized by RegisterClientScriptBlock(), but rather passed on for potential use within the GetHashCode() function of the ScriptKey class. This inclusion likely aids in distinguishing and pinpointing the specific script block in a more precise manner, especially when correlated with the designated type.
While there is discussion on potential issues with this approach, personally I have not faced any such problems. The issue arises when inheriting from a control containing certain code, causing the GetType function to return unexpected results. This can lead to duplicate script additions and potential conflicts in JavaScript functionality.
To avoid this issue, it is suggested to use typeof() instead of GetType. In VB.Net:
Page.ClientScript.RegisterClientScriptBlock(GetType(MyClass), "key", "scriptblock", True)
However, it should be noted that this scenario is quite rare.
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