This causes two bindings in the collection to bind to the same property. Parameter name: binding error in c#?
c#, devexpress, winforms
Solution
Every Control can have only one binding at a time. It looks like you already have a binding to the textboxes before and now when you try to rebind it, it throws an error. You need to clear the old binding before adding a new one.
Clear binding first and then add it to the control:
CBL_SelectCustomer.DataBindings.Clear();
CBL_SelectCustomer.DataBindings.Add("EditValue", binding_cust, "CustomerId");
Problem
I have tried to bind a datasource to a `DevExpress.XtraEditors.LookupEdit` at run-time. I tried this code, but am getting the following error: This causes two bindings in the collection to bind to the same property. Parameter name: binding. Here is my code: ``` // Create an adapter to load data from the "Customers" table. OleDbDataAdapter testcustomers = new OleDbDataAdapter( "SELECT CustomerId, Customername FROM Customer WHERE CompanyId =" + TXE_CompId.Text, connection); DataSet ds = new DataSet(); // Create a dataset that will provide data from the database. testcustomers.Fill(ds, "Customer"); // Load data from the "Customers" table to the dataset. // A BindingSource for the "Customers" table. BindingSource binding_cust = new BindingSource(ds, "Customer"); CBL_SelectCustomer.DataBindings.Add("EditValue", binding_cust, "CustomerId"); // getting error on this line // Specify the data source to display in the dropdown. CBL_SelectCustomer.Properties.DataSource = binding_cust; // The field providing the editor's display text. CBL_SelectCustomer.Properties.DisplayMember = "CustomerName"; // The field matching the edit value. CBL_SelectCustomer.Properties.ValueMember = "CustomerId"; // Add two columns to the dropdown. LookUpColumnInfoCollection coll = CBL_SelectCustomer.Properties.Columns; // A column to display the ProductID field's values. coll.Add(new LookUpColumnInfo("CustomerName", 0)); ``` How can this error be fixed?