Home Database Mysql Tutorial Access入门教程7.4怎样设置字段的属性(一)

Access入门教程7.4怎样设置字段的属性(一)

Jun 07, 2016 pm 04:02 PM
access Getting Started Tutorial Field Attributes how set up

设置完字段的 数据类型 现在来设置字段的 属性 表设计器的下半部分都是用来设置表中字段的 字段属性 的 字段属性包括有 字段大小 格式 输入法模式 等 设置它们会对表中的数值产生影响 先设置 订货单位 文本字段的各种属性 默认的 字段大小 为 表示这个字段中

    设置完字段的数据类型现在来设置字段的属性表设计器的下半部分都是用来设置表中字段的字段属性字段属性包括有字段大小格式输入法模式设置它们会对表中的数值产生影响

    先设置订货单位文本字段的各种属性默认的字段大小表示这个字段中最多可以输入个字符通常只需要十几个文字就足够表达一个订货单位的名称了所以可将字段大小定为只要选中字段大小文本框然后修改里面的数值就可以了


Access入门教程7.4怎样设置字段的属性(一)

    字段大小是字段的属性之一现在设置另一个属性输入时的格式在Access 有几种文本格式符号使用这些符号可以将表中的数据按照一定的格式进行处理具体格式符号及其用法将在课后补充中介绍格式文本框中输入订货单位的名称会向右对齐如果在格式输入符号名称就会自动向左对齐

    输入法模式属性是个选择性的属性它共有三个选项随意输入法开启输入法关闭选中输入法开启当光标移动到这个字段内的时候屏幕上就会自动弹出首选的中文输入法而选择输入法关闭则只能在这个字段内输入英文和数字不同的字段采用不同的输入法模式可以减少启动或关闭中文输入法的次数而选择随意就可以启动和关闭中文输入法

    下面的输入掩码可以控制输入到字段中的值比如输入值的哪几位才能输入数字什么地方必须输入大写字母等如果要把某个字段输入的值作为密码不让别的人看到时就要在输入时将数据的每个字符显示成星号这些都需要由设置字段的输入掩码属性来实现设置字段的输入掩码只要单击输入掩码文本框右面的生成按钮就会出现输入掩码向导对话框对话框上有一个列表框比如要让这个文本字段的输入值以密码的方式输入则单击列表框中的密码选项然后单击完成按钮

    下面的标题属性一般情况下都不设让它自动取这个字段的字段名这样当在窗体上用到这个字段的时候就会把字段名作为它的标题来显示默认值属性只要在它的文本框中输入某段文字那么这个字段的值在没有重新输入之前就会以所输入的文字作为该字段中的值

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