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Hi Jaanus,
I understand that this functionality might be important for your project, however, usually, we do not recommend expanding all rows at once. This could lead to the observed slow performance. For the time being, there is no way to expand all the rows faster.
The reason for the slow performance comes from the fact that, for every HTML row in the table, a new row is created and appended:
Regards,
Preslav
Progress Telerik
I understand that this functionality might be important for your project, however, usually, we do not recommend expanding all rows at once. This could lead to the observed slow performance. For the time being, there is no way to expand all the rows faster.
The reason for the slow performance comes from the fact that, for every HTML row in the table, a new row is created and appended:
Regards,
Preslav
Progress Telerik
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