本文介绍了检查datagridview中是否已经存在一个值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有人可以帮我吗? 我正在从标签向datagridview添加值.但是在插入值之前,我想检查该值是否在datagridview中不存在.我在堆需要帮助. 在此先感谢您.
Hi, Can somebody help me out? I am adding values to a datagridview from a label. But before i insert the value, i want to check if the value does not already exist in the datagridview. I am stack. Need help. Thanks in advance.
推荐答案您可以对使用datagridview进行分配的Assign数据集进行查询.例如. You can make query on assign dataset which is assign with datagridview. for example. dim ds as new dataset Dim da as new oledb.OledbDataAdapter("Select * from table1",conn) da.Fill(ds) DataGridView1.DataSource = ds.Table(0) ''Now if you want to check that record is all ready exists of not. dim dr as datarow() dr = ds.Table(0).select("SearchFieldName = " & ''SearchValue) if dr.Length >0 then Messagebox.show("Duplicate Record") end if
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检查datagridview中是否已经存在一个值
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