EasyUI中datagrid使用DataTable数据

DataTable dt = CustormerBLL.ShenHe(1);  DataTable 数据源
System.Text.StringBuilder jsonBuilder = new System.Text.StringBuilder();
jsonBuilder.Append("{");
jsonBuilder.AppendFormat("\"total\":{0}, ", dt .Rows.Count);
jsonBuilder.Append("\"rows\":[ ");
for (int i = 0; i < dt .Rows.Count; i++)
{
jsonBuilder.Append("{");
for (int j = 0; j < dt .Columns.Count; j++)
{
jsonBuilder.Append("\"");
jsonBuilder.Append(dt .Columns[j].ColumnName);
jsonBuilder.Append("\":\"");
jsonBuilder.Append(dt .Rows[i][j].ToString());
jsonBuilder.Append("\",");
}
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
jsonBuilder.Append("},");
}
jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
jsonBuilder.Append("]");
jsonBuilder.Append("}");
return jsonBuilder.ToString();