数据网格视图单元格内容单击错误 [英] Data Grid view cell content click error

问题描述

我创建了2个表单1.EmpPerInfo 2.Search，当用户点击EmpPerInfo表单的搜索按钮时，将打开搜索表单。然后用户将放置EmpNo。 &安培;点击查找按钮。然后匹配的行/记录将显示在Gridview中。



上述步骤的代码工作正常。但现在我想要用户点击名称数据网格视图系统的列将显示EmpPerInfo形式的记录，我已经写了下面提到的代码。

I have created 2 forms 1.EmpPerInfo 2.Search, When user click on "Search" button of EmpPerInfo form then Search form will be open. Then user will put EmpNo. & click on find button.Then matched row/record will be displayed in Gridview.

Code for above mentioned steps are working fine.but Now I want when user click on Name column of Data Grid View system will show that record in "EmpPerInfo" form for this i have written below mentioned code.

Private Sub DataGridView1_CellContentClick(sender As System.Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles EmployeeGrid.CellContentClick
       If (e.ColumnIndex <> -1) Then
           If (e.RowIndex > -1) Then
               EmpNo = e.RowIndex

               EmpPerInfo.txtSrn.Text = dt.Rows(EmpNo).ItemArray(0).ToString()
               EmpPerInfo.txtFullName.Text = dt.Rows(EmpNo).ItemArray(2).ToString()
               EmpPerInfo.Show()

               
           End If
       End If
   End Sub

但是EmpPerInfo.txtSrn.Text = dt.Rows（EmpNo）.ItemArray（0）.ToString（）在此语句系统中引发错误位置0没有行



。

but "EmpPerInfo.txtSrn.Text = dt.Rows(EmpNo).ItemArray(0).ToString()" at this statement system throws an error "There is no row at position 0"

.

推荐答案

首先，搜索算法效率低下。而不是循环遍历行集合，使用SELECT方法过滤数据 [ ^ ]。

这是另一种方法： DataGridView Filter [< a href =http://code.msdn.microsoft.com/DataGridView-Filter-db565575target =_ blanktitle =New Window> ^ ]



其次，几种方法在表单之间传递数据：

在应用程序中的对象之间传递数据 [ ^ ]

演练：在Windows窗体之间传递数据 [ ^ ]

在Windows窗体之间传递值 [ ^ ]

First of all, searching algorithm is inefficient. Rather then looping through the collection of rows, filter data using SELECT method[^].
Here is another method: DataGridView Filter[^]

Second of all, there are few ways to pass data between forms:
Passing Data Between Objects in an Application[^]
Walkthrough: Passing Data Between Windows Forms[^]
Pass values between windows forms[^]

数据网格视图中没有位置0

当用户点击列名称，它被视为单击事件。由于没有点击一行，行被设置为0.



试试这个

There is no position 0 in data grid view.
When the user clicks on the column name, It counts as a click event. Since A row was not clicked the row is set to 0.

Try this

Private Sub DataGridView1_CellContentClick(sender As System.Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles EmployeeGrid.CellContentClick
       
           If (e.RowIndex > 0) Then
               EmpNo = e.RowIndex
 
               EmpPerInfo.txtSrn.Text = dt.Rows(EmpNo).ItemArray(0).ToString()
               EmpPerInfo.txtFullName.Text = dt.Rows(EmpNo).ItemArray(2).ToString()
               EmpPerInfo.Show()
 
               
           End If
      
   End Sub

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