[英]Copy the contents(including headers) of a ListView to a DataGridView in VB.net
我有一个ListView
具有database
值。 我使用了两个MS Access OLEDB Statements
来生成我拥有的数据。 所以我用了两个While Loops
。 第二条OLEDB Statement
参考了第一条。 如何将ListView
所有内容插入DataGridView
?
这是我的两个While loops
代码,用于调用OLEDB Statements
:
Dim connectionstring As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\STSlog.mdb;Jet OLEDB:Database Password=password;"
Dim conn As New OleDbConnection(connectionstring)
Dim command, command2, command3 As New OleDbCommand
Dim commstring, commstring2, commstring3 As String
Dim searchstring As String
commstring = "SELECT DISTINCT empname FROM data WHERE ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' ORDER BY empname ASC"
command = New OleDbCommand(commstring, conn)
commstring3 = "SELECT SUM([Regular]) AS sRegular, SUM(OT) AS sOT FROM data WHERE ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' "
command3 = New OleDbCommand(commstring3, conn)
MainLView.Clear()
MainLView.GridLines = True
MainLView.FullRowSelect = True
MainLView.View = View.Details
MainLView.MultiSelect = True
MainLView.Columns.Add("Employee Name", 290)
MainLView.Columns.Add("Total Regular", 200)
MainLView.Columns.Add("Total Overtime", 200)
MainLView.Columns.Add("Total Hours", 200)
conn.Open()
Dim reader As OleDbDataReader = command.ExecuteReader()
Dim RegSum, OTSum, Total As Decimal
While reader.Read
searchstring = reader("empname")
commstring2 = "SELECT SUM([Regular]) AS sReg, SUM(OT) AS sOT FROM data WHERE empname = '" & searchstring & "' AND ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' "
command2 = New OleDbCommand(commstring2, conn)
Dim reader2 As OleDbDataReader = command2.ExecuteReader()
While reader2.Read
RegSum = (reader2("sReg"))
OTSum = (reader2("sOT"))
Total = Format((RegSum + OTSum), "0.0")
With MainLView.Items.Add(reader("empname"))
.subitems.add(reader2("sReg"))
.subitems.add(reader2("sOT"))
.subitems.add(Total)
End With
End While
End While
我先将列添加到DataGridView
然后使用DataGridView Rows
从数据库中插入数据。
Dim connectionstring As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\STSlog.mdb;Jet OLEDB:Database Password=password;"
Dim conn As New OleDbConnection(connectionstring)
Dim command, command2, command3 As New OleDbCommand
Dim commstring, commstring2, commstring3 As String
Dim searchstring As String
commstring = "SELECT DISTINCT empname FROM data WHERE ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' ORDER BY empname ASC"
command = New OleDbCommand(commstring, conn)
commstring3 = "SELECT SUM([Regular]) AS sRegular, SUM(OT) AS sOT FROM data WHERE ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' "
command3 = New OleDbCommand(commstring3, conn)
MainLView.Clear()
MainLView.GridLines = True
MainLView.FullRowSelect = True
MainLView.View = View.Details
MainLView.MultiSelect = True
MainLView.Columns.Add("Employee Name", 290)
MainLView.Columns.Add("Total Regular", 200)
MainLView.Columns.Add("Total Overtime", 200)
MainLView.Columns.Add("Total Hours", 200)
Dim col1 As New DataGridViewTextBoxColumn
Dim col2 As New DataGridViewTextBoxColumn
Dim col3 As New DataGridViewTextBoxColumn
Dim col4 As New DataGridViewTextBoxColumn
col1.HeaderText = "Employee Name"
col2.HeaderText = "Total Regular"
col3.HeaderText = "Total Overtime"
col4.HeaderText = "Total Hours"
ReportDGV.Columns.Add(col1)
ReportDGV.Columns.Add(col2)
ReportDGV.Columns.Add(col3)
ReportDGV.Columns.Add(col4)
conn.Open()
Dim reader As OleDbDataReader = command.ExecuteReader()
Dim RegSum, OTSum, Total As Decimal
While reader.Read
searchstring = reader("empname")
commstring2 = "SELECT SUM([Regular]) AS sReg, SUM(OT) AS sOT FROM data WHERE empname = '" & searchstring & "' AND ProjectCode = '" & PrjctCmbBox.SelectedItem.ToString & "' "
command2 = New OleDbCommand(commstring2, conn)
Dim reader2 As OleDbDataReader = command2.ExecuteReader()
While reader2.Read
RegSum = (reader2("sReg"))
OTSum = (reader2("sOT"))
Total = Format((RegSum + OTSum), "0.0")
With MainLView.Items.Add(reader("empname"))
.subitems.add(reader2("sReg"))
.subitems.add(reader2("sOT"))
.subitems.add(Total)
Dim row As String() = New String() {reader("empname"), reader2("sReg"), reader2("sOT"), Total}
ReportDGV.Rows.Add(row)
End With
End While
End While
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