objDataTable.PrimaryKey = new DataColumn[] { objDataTable.Columns["主键的字段名"] }; 下面是实例代码(部分): protected void TextBoxFiscalYear_TextChanged(object sender, EventArgs e) { var tb = (TextBox)sender; if (string.IsNullOrEmpty(tb.Text.Trim())) return; //如果用户没有输入任何,那做...
I don;t have any idea why it doesn't working, it's very important to me. please help SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_...
However, I would suggest checking the size of the tempdb(s) in for the Production environment to see if there was enough space allocated at the time when the Primary Key was present in the table variable. Just my assumptions, but the tempdb(s) may not have been configured with the approp...
But this still doesn't explain why a large chunk of the log file is often read in my production scenario (and occasionally in the repro provided here). I don't think I have that many in-flight transactions at a given time in my app, and there certainly aren't any...
12. Akimbo # Akimbo, this must be one of the odder-looking words in the language and puzzles us in part because it doesn't seem to have any relatives. What's more, it is now virtually a fossil word, until recently almost invariably found in arms akimbo, a posture in ...
HOME CHEF and other companies use social media as a marketing channel in their efforts to build interactive online relationships with clients. HOME CHEF, for example, doesn't wish to secretly mine client information. HOME CHEF uses social media to increase its audience reach...
This includes the name and the table instance in a query. Input: field_arg in: Item_field The field argument to parse the column usage info struct from. Output: std::string Name of the original base table to which the field belongs. Empty, if field doesn't belong to base table. field...
easy way to implement a Find function. It seems I am going to have to use a Predicate. Upon further investigation, I still can't seem to re-create the functionality. Private Function ByKey(ByVal Instance As MyClass) As Boolean Return Instance.Key = "I NEED THIS COMPARISON TO BE ...
Loss of image contrast results when any white light is scattered, either from the bottom surface of the transparent substrate or from the irregular toner surfaces and doesn't pass through the toner. A known method of improving the appearance of color xerographic images on a transparent ...
When I create a table which has more than 51 text columns, it appears not support! Error like below: ERROR 1031 (HY000) at line 141: Table storage engine for 'jc_acquisition' doesn't have this option My sql statement is like this: ...