Asp.net 将Url绑定到Gridview
我想将Asp.net 将Url绑定到Gridview,asp.net,vb.net,odbc,Asp.net,Vb.net,Odbc,我想将url绑定到GridView,但我不知道如何绑定 例如,当我键入http://localhost:12345/example.aspx?FirstName=John在url中,它将在GridView中给出结果,该结果仅以名字“John”显示 这是我目前的代码: Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load Dim dt As New DataTable ' Stablis
url
绑定到GridView
,但我不知道如何绑定
例如,当我键入http://localhost:12345/example.aspx?FirstName=John
在url
中,它将在GridView
中给出结果,该结果仅以名字“John”显示
这是我目前的代码:
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
Dim dt As New DataTable
' Stablish ODBC Connection
Dim con As New OdbcConnection("DRIVER={SQL Server};Server=WJNJPHR8TCX8P\SQLEXPRESS;Database=Fabrics;Integrated Security=True;")
' Query Command
Dim cmd As New OdbcCommand("SELECT * FROM [Client] WHERE [FirstName] = ?", con)
con.Open()
' Gets the path (Example.aspx)
Dim path As String = HttpContext.Current.Request.Url.AbsolutePath
' Gets the host (localhost)
Dim host As String = HttpContext.Current.Request.Url.Host
' Gets the whole url (localhost:24124/Example.aspx)
Dim url As String = HttpContext.Current.Request.Url.AbsoluteUri
' Parse the query string variables into a NameValueCollection
Dim qscoll As NameValueCollection = HttpUtility.ParseQueryString(url)
' Iterate through the collection and shows the result in MsgBox
Dim sb As New StringBuilder()
For Each s As String In qscoll.AllKeys
sb.Append(s & " = " & qscoll(s) & vbCrLf)
Next s
MsgBox(sb.ToString)
' Gets all keys and values in query string and shows it on MsgBox
For Each key As String In HttpContext.Current.Request.QueryString.AllKeys
MsgBox("Key: " + key + " Value: " + Request.QueryString(key))
Next key
Dim FName As String = Request.QueryString("FirstName")
Dim par1 As New OdbcParameter
par1.OdbcType = OdbcType.NVarChar
par1.Value = FName
par1.ParameterName = "@FirtName"
cmd.Parameters.Add(par1)
'Shows the result in Data Grid
dt.Load(cmd.ExecuteReader()) '==> Error: Invalid use of default parameter
GridView1.DataSource = dt
GridView1.DataBind()
End Sub
任何帮助都可以 您可以使用直接访问查询字符串
Dim firstName as string = Request.QueryString("firstName")
然后必须在执行它之前将其作为查询的参数传递
Dim par1 As New OdbcParameter
par1.DbType = DbType.String
par1.Value = firstName
par1.ParameterName = "@FirstName"
cmd.Parameters(1) = par1
希望对你有所帮助回答了我的问题
这是我的密码:
For Each key As String In HttpContext.Current.Request.QueryString.AllKeys
Dim FName As String = Request.QueryString("FirstName")
Dim par1 As New OdbcParameter With {
.OdbcType = OdbcType.NVarChar,
.Value = FName,
.ParameterName = "@FirstName"
}
cmd.Parameters.Add(par1)
MsgBox("Key: " + key + " Value: " + Request.QueryString(key))
dt.Load(cmd.ExecuteReader())
GridView1.DataSource = dt
GridView1.DataBind()
Next key
@谢谢你的帮助!:) 谢谢大家!@isol我将尝试:)我尝试了您的代码,它给我一个错误,上面写着“计数为0的此OdbcParameterCollection的索引1无效”。我试图编辑您的代码,但它给了我相同的错误。我试图编辑
par1.DbType=DbType.String
到par1.OdbcType=OdbcType.NVarChar
对不起,尝试cmd.Parameters.Add(par1)
我也尝试过,并且给我一个错误,上面写着“参数使用无效”谢谢你的帮助也许我会自己调试:)@isol