Hi,

I get the collection from webservice:

 var allPlaceHolders = (from ph in new MyService().GetPlaceHolders()
                                   select ph).Select(l => new { Code = l.Code, Name = l.Name, Related = false }).ToList();

            dgPlaceHoldersAdd.DataSource = allPlaceHolders;

Designer.cs:

 this.dgPlaceHoldersAdd.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dgPlaceHoldersAdd.Location = new System.Drawing.Point(3, 54);
            this.dgPlaceHoldersAdd.Name = "dgPlaceHoldersAdd";
            this.dgPlaceHoldersAdd.RowHeadersVisible = false;
            this.dgPlaceHoldersAdd.Size = new System.Drawing.Size(286, 151);
            this.dgPlaceHoldersAdd.TabIndex = 15;

The problem is, that I can't changing value of checkBox column.

I has enabled AutoGeneratedColumns (In datagridview at start there is not any column)