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                                • Marina (DevExpress Support) 12.05.2018

                                  We are not aware of such an issue. After searching for similar reports, I have found only one issue with such an exception(GridLookup - Unable to get property 'querySelectorAll' of undefined or null reference). But it doesn't look related to your case. Would you please provide a sample where the issue can be reproduced? I look forward to hearing from you.
                                • Lukasz Zielinski 12.06.2018


                                  In the attachment, a movie that demonstrates an error. Below is the code on the JS side that is called.


                                  function OnClick(s,e) {

                                  if (!CtlGrid.InCallback()) {


                                  function EndCallback(s,e) {

                                  CtlGrid.SetHeight(h - r.height);



                                  protectedvoid GV_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {
                                  protected void GV_DataBinding(object sender, EventArgs e) {
                                    GV.DataSource = FModel.CurrentDocumentDataSource;


                                • Marina (DevExpress Support) 12.06.2018
                                  Hi Luke, 

                                  I have created a sample based on your code snippet but was not able to reproduce the issue. Would you please review my sample and video and modify the sample to illustrate how to recreate the issue?
                                • Lukasz Zielinski 12.07.2018
                                  Hi Marina

                                  In the attachment, you have corrected your source code and a movie showing error.

                                • Lanette (DevExpress Support) 12.07.2018

                                  Thank you for providing your sample project.
                                  I was able to reproduce the issue on my side. We need some additional time to investigate the cause of this issue. We will update this thread once we have results to report.

                                1 Solution

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                                • 18.2.4 : Hotfix requested and is being prepared