c# - How stop CellValueChanged firing while populating? -

i have form contains several datagridview's. being cleared , populated programmatically while program running. based on cells being altered in 1 of datagridviews user in form. user changing cell triggers clearing , repopulating datagridviews including 1 interact with.

so question. can avoid cellvaluechanged being triggered everytime datagridviews cleared , repopulated programmatically? instead should triggered when user edits cell in form.

i've tried searching answer no success, hope not duplicate question.

i doubt can stop cellvaluechanged event being triggered, other removing handlers(events still triggered, there won't handlers it):

private dgv_thatcauseschanges_cellvaluechanged(object sender, eventargs e) {             this.otherdgv.cellvaluechanged -= this.dgv_otherdgvcellvaluechanged;      try // make sure handlers reinstatiated on exception @steve     {                  // change other dgvs     }         {              this.otherdgv.cellvaluechanged += this.dgv_otherdgvcellvaluechanged;     } } 

or alternative solution add flag, checked in every handler:

private bool ischanging;  private dgv_thatcauseschanges_cellvaluechanged(object sender, eventargs e) {     this.ischanging = true;      try // make sure handlers reinstatiated on exception @steve     {            // change other dgvs     }         {             this.ischanging = false;     } }  private dgv_otherdgvcellvaluechanged(object sender, eventargs e) {     if (this.ischanging)         return;      // handle changes }