日期:2014-05-18 浏览次数:20786 次
public Boolean UpdateDataTable3(DataTable dt, string strTable) { SqlDataAdapter da = new SqlDataAdapter(); SqlConnection conn = commSql.ReturnDbConn(); string a1 = ""; string a2 = ""; string a3 = ""; for (int i = 0; i < dt.Columns.Count; i++) { if (dt.Columns[i].ColumnName.ToString().ToUpper() != "ID") { a1 = a1 + dt.Columns[i].ColumnName.ToString() + ","; a2 = a2 + "@" + dt.Columns[i].ColumnName.ToString() + ","; a3 = a3 + dt.Columns[i].ColumnName.ToString() + "=@" + dt.Columns[i].ColumnName.ToString() + ","; } } a1 = a1.Substring(0, a1.Length - 1); a2 = a2.Substring(0, a2.Length - 1); a3 = a3.Substring(0, a3.Length - 1); da.InsertCommand = new SqlCommand("Insert Into " + strTable + "(" + a1 + ") Values(" + a2 + ")", conn); da.InsertCommand.CommandType = CommandType.Text; da.UpdateCommand = new SqlCommand("Update " + strTable + " Set " + a3 + " Where ID=@ID", conn); da.UpdateCommand.CommandType = CommandType.Text; da.DeleteCommand = new SqlCommand("Delete From " + strTable + " Where ID=@ID", conn); da.DeleteCommand.CommandType = CommandType.Text; for (int i = 0; i < dt.Columns.Count; i++) { da.InsertCommand.Parameters.Add("@" + dt.Columns[i].ColumnName.ToString(), ReturnDbType(dt.Columns[i].DataType.ToString()), dt.Columns[i].MaxLength, dt.Columns[i].ColumnName); da.UpdateCommand.Parameters.Add("@" + dt.Columns[i].ColumnName.ToString(), ReturnDbType(dt.Columns[i].DataType.ToString()), dt.Columns[i].MaxLength, dt.Columns[i].ColumnName); da.DeleteCommand.Parameters.Add("@" + dt.Columns[i].ColumnName.ToString(), ReturnDbType(dt.Columns[i].DataType.ToString()), dt.Columns[i].MaxLength, dt.Columns[i].ColumnName); } da.DeleteCommand.Parameters.Add("@id", SqlDbType.Int, 4, "id"); try { da.Update(dt ); return true; } catch (Exception ex) { return false; } } SqlDbType ReturnDbType(string strTypeName) { switch (strTypeName) { case "System.String": return SqlDbType.NVarChar; break; case "System.Int32": return SqlDbType.Int; break; case "System.DateTime": return SqlDbType.DateTime; break; case "System.Decimal": return SqlDbType.Decimal; break; case "System.Byte": return SqlDbType.Image; break; case "System.Boolean": return SqlDbType.Bit; break; case "System.Double": return SqlDbType.Float; break; case "System.Single": return SqlDbType.Real; break; default: return SqlDbType.NVarChar; break; } }