在VB.NET中,如果你想在自定义数据库中通过TextBox进行搜索,你需要执行以下步骤:
以下是一个简单的VB.NET示例,展示了如何根据TextBox中的文本搜索数据库中的记录:
Imports System.Data.SqlClient
Public Sub SearchRecords()
Dim connectionString As String = "YourConnectionStringHere"
Dim searchQuery As String = "SELECT * FROM YourTable WHERE YourColumn LIKE @SearchText"
Dim searchText As String = "%" & YourTextBox.Text & "%"
Using connection As New SqlConnection(connectionString)
Using command As New SqlCommand(searchQuery, connection)
command.Parameters.AddWithValue("@SearchText", searchText)
Try
connection.Open()
Dim reader As SqlDataReader = command.ExecuteReader()
' 假设你有一个名为dataGridView1的DataGridView控件
YourDataGridView.DataSource = Nothing
Dim dataTable As New DataTable()
dataTable.Load(reader)
YourDataGridView.DataSource = dataTable
Catch ex As Exception
MessageBox.Show("An error occurred: " & ex.Message)
End Try
End Using
End Using
End Sub
通过以上步骤和示例代码,你应该能够在VB.NET中实现通过TextBox进行数据库搜索的功能。如果遇到具体问题,请提供详细的错误信息以便进一步诊断。
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