2 つのフォームがあり、2 つのフォームのそれぞれにDataGridView
(chatform
とprodetail
) があります。
で、各行にが生成されたchatform
を作成しました。DataGridView
Button
Button
クリックするたびにprodetail
フォームが読み込まれ、フォーム内で元のからprodetail
の値を取得したい。SelectedRow.Cell
DataGridView
chatform
コード ( chatform
):
Public Sub loadtoDGV()
Dim sqlq As String = "SELECT * FROM chattbl"
Dim sqlcmd As New SqlCommand
Dim sqladpt As New SqlDataAdapter
Dim tbl As New DataTable
With sqlcmd
.CommandText = sqlq
.Connection = conn
End With
With sqladpt
.SelectCommand = sqlcmd
.Fill(tbl)
End With
DataGridView1.Rows.Clear()
For i = 0 To tbl.Rows.Count - 1
With DataGridView1
.Rows.Add(tbl.Rows(i)("Username"), tbl.Rows(i)("Title"), tbl.Rows(i)("ChatDateTime"))
End With
Next
conn.Close()
End Sub
Private Sub ChatForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
loadtoDGV()
End Sub
コード ( DataGridView1.CellContentClick
):
Private Sub grdData_CellContentClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
Dim colName As String = DataGridView1.Columns(e.ColumnIndex).Name
If colName = "Detail" Then
Prodetail.Show()
MessageBox.Show(String.Format("You clicked the button in row {0} of the Detail column", e.RowIndex))
End If
End Sub
コード ( prodetail
):
Public Sub loadtoDGV2()
Dim i As Integer
i = ChatForm.DataGridView1.SelectedRows.Count
MsgBox(i)
Dim compareai As String = ChatForm.DataGridView1.SelectedRows(i).Cells(1).Value
Dim sqlq As String = "SELECT * FROM Chattbl WHERE Title =" & compareai & ""
Dim sqlcmd As New SqlCommand
Dim sqladpt As New SqlDataAdapter
Dim tbl As New DataTable
With sqlcmd
.CommandText = sqlq
.Connection = conn
End With
With sqladpt
.SelectCommand = sqlcmd
.Fill(tbl)
End With
DataGridView1.Rows.Clear()
For i = 0 To tbl.Rows.Count - 1
With DataGridView1
.Rows.Add(tbl.Rows(i)("Username"), tbl.Rows(i)("Title"), tbl.Rows(i)("ChatDateTime"), tbl.Rows(i)("ChatContent"))
End With
Next
conn.Close()
End Sub
Private Sub Prodetail_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
loadtoDGV2()
End Sub
私は何を間違えましたか?
MsgBox(i) i = SelectedRow(0)
最初の行のデータが表示されると仮定して使用しようとしましたが、データベースからデータをロードDataGridView1
しprodetail
ません。
エラーは見られませんでしたが、解決策がありません。