Question

c# winform datagridview自定义一个列并且让其自增

Answer 1

System.Data.DataTable table = new DataTable();
System.Data.DataColumn column = new DataColumn();

column.ColumnName = "序号";
column.AutoIncrement = true;
column.AutoIncrementSeed = 1;
column.AutoIncrementStep = 1;

table.Columns.Add(column);
table.Merge(ds.Tables[0]);

datagridview1.DataSource = table;
datagridview1.Columns["序号"].DisplayIndex = 0;//调整列顺序
复制过来的，希望对你有帮助，c# 支持 隐式的转换，你也可以用Convert 来转换类型