When creating a linkage, the Data Binding combox control triggers the SelectedIndexChanged event,

When creating a linkage, the Data Binding combox control triggers the SelectedIndexChanged event,

 

I have seen the solutions for many websites, which are basically the same and cannot be solved. I doubt they are directly fired from each other and they will pass verification.

This problem occurs when the province, city, and district levels are linked. At last, you can set the value object and Display object before binding the data. In this case, no problems exist ~

 

Example:

CbProvince. ValueMember = "Key ";
CbProvince. DisplayMember = "Value ";
CbCity. ValueMember = "Key ";
CbCity. DisplayMember = "Value ";
CbCountry. ValueMember = "Key ";
CbCountry. DisplayMember = "Value ";
CbProvince. DataSource = UserRepository. GetProvinceIdNameList ();