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如何避免在组合框中出现重复?如何避免在vb.net中的组合框中出现重复
我有3个组合框,我希望用户可以添加或从现有的价值选择,但是当我选择现有的项目之一,它复制的项目
With something
.DataSource = empBindingsource
.DisplayMember = "Employer_Name"
.ValueMember = "Employer_ID"
.DataBindings.Add("selectedValue", job_VacanciesBindingsource, "Employer_ID", False, DataSourceUpdateMode.OnValidation)
End With
With cboDesc
.DataSource = descDataset.Tables("Job_Vacancies").Copy
.DisplayMember = "Job_Description" '
.ValueMember = "Job_ID"
.DataBindings.Add("text", job_VacanciesBindingsource, "Job_Description", False, DataSourceUpdateMode.OnValidation)
End With
向我们展示一些代码,以便我们知道你在做什么。 – freebird
基本上不要放一个。 –
.DataSource = empBindingsource .DisplayMember = “Employer_Name” .ValueMember = “Employer_ID” .DataBindings.Add( “了selectedValue”,job_VacanciesBindingsource, “Employer_ID”,False时,DataSourceUpdateMode.OnValidation) 完随着 随着cboDesc .DataSource = descDataset.Tables( “Job_Vacancies”)。复印 .DisplayMember = “Job_Description” '.ValueMember = “JOB_ID” .DataBindings.Add( “文本”,job_VacanciesBindingsource, “Job_Description”,FALSE,DataSourceUpdateMode.OnValidation) End With – Mahi