Question

任何人都可以帮我吗？我正在加载页面时动态创建几个列表框，网格视图和按钮，我需要知道如何将列表框的选定项目传递给按钮单击？这是我的代码：

private void Page_Load(object sender, EventArgs e)
{
    DataTable dt = new DataTable();
    DataTable dt1 = new DataTable();
    DataTable dt2 = new DataTable();

    SqlConnection con = new SqlConnection("Data Source=N/A;Initial Catalog=GB_COCKPIT;Integrated Security=True");
    con.Open();
    SqlCommand SelectServeur = new SqlCommand("SELECT  NomServeur, palier, description, responsable FROM pltf_Web.[GBV1001_Inventaire_IIS_Complet] where[FONCTION DE BASE] = 'NON CLASSÉ' AND[Fonction Caracteristique etendue] IS NULL", con);
    SqlCommand SelectNomServeur = new SqlCommand("SELECT  NomServeur FROM pltf_Web.[GBV1001_Inventaire_IIS_Complet] where[FONCTION DE BASE] = 'NON CLASSÉ' AND[Fonction Caracteristique etendue] IS NULL", con);

    SqlDataReader dr = SelectServeur.ExecuteReader();
    dt.Load(dr);
    SqlDataReader dr1 = SelectNomServeur.ExecuteReader();
    dt1.Load(dr1);

    var NBServeurs = dt.Rows.Count;

    for (int i = 0; i < NBServeurs; i++)
    {
        var nomserveurs = dt1.Rows[i].ItemArray;
        var NomServeur = nomserveurs[0];
        SqlCommand SelectComposantes = new SqlCommand("SELECT b.ID_Composant as composante  FROM[gb_cockpIT].[pltf_web].[GBV1001_Inventaire_IIS_Complet] as a inner join[dbo].[GBD0007_Liste_Composant] as b on a.[Composante de base] = b.Nom_Composant_FR where a.NomServeur ='" + NomServeur + "'  and b.ID_Plateforme = 103", con);
        SqlDataReader dr2 = SelectComposantes.ExecuteReader();
        dt2.Load(dr2);

        DataTable dt4 = new DataTable();
        SqlCommand SelectServeurs = new SqlCommand("SELECT  NomServeur, palier, [composante de base],description, responsable FROM pltf_Web.[GBV1001_Inventaire_IIS_Complet] where[FONCTION DE BASE] = 'NON CLASSÉ' AND[Fonction Caracteristique etendue] IS NULL and  NomServeur ='" + NomServeur + "'", con);
        SqlDataReader dr4 = SelectServeurs.ExecuteReader();
        dt4.Load(dr4);

        GridView NomGridView = new GridView();
        NomGridView.ID = "GridView" + i.ToString();
        NomGridView.Width = 900;
        NomGridView.DataSource = dt4;
        NomGridView.DataBind();
        form1.Controls.Add(NomGridView);
        form1.Controls.Add(new LiteralControl("<br />"));

        DataTable dt3 = new DataTable();
        var nomComposantes = dt2.Rows[i].ItemArray;
        var nomComposante = nomComposantes[0];
        SqlCommand GetListComposantes = new SqlCommand("DECLARE @return_value int EXEC @return_value = [dbo].[GBSP0004_Liste_Fonctions]  @IDComposant = " + nomComposante + "", con);
        SqlDataReader dr3 = GetListComposantes.ExecuteReader();
        dt3.Load(dr3);

        ListBox NomListBox = new ListBox();
        NomListBox.DataValueField = dt3.Columns["code_fonction"].ToString();
        NomListBox.ID = "ListBox" + i.ToString();
        NomListBox.DataSource = dt3;
        NomListBox.DataBind();
        NomListBox.Height = 200;

        form1.Controls.Add(NomListBox);
        form1.Controls.Add(new LiteralControl("<br />"));
        form1.Controls.Add(new LiteralControl("<br />"));

        Button NouveauBouton = new Button();
        NouveauBouton.ID = "Bouton" + i.ToString();
        NouveauBouton.Text = "Assigner";
        form1.Controls.Add(NouveauBouton);

        NouveauBouton.Click += new EventHandler(this.button_Click);

        form1.Controls.Add(new LiteralControl("<br />"));
        form1.Controls.Add(new LiteralControl("<br />"));
        form1.Controls.Add(new LiteralControl("<hr>"));
        form1.Controls.Add(new LiteralControl("<br />"));
        form1.Controls.Add(new LiteralControl("<br />"));

    }
    con.Close();
}

protected void button_Click(object sender, EventArgs e)
{
    Button buttonID = sender as Button;
}

Answer 1

我看到你正在迭代并生成控件。如果我理解正确，你可以让按钮知道什么是相关的ListBox。然后，在单击时，您将获得列表框并查看所选内容。

首先，您需要添加以下代码行：NouveauBouton.Attributes["ListBox"] = NomListBox.ID;。

所以在你的Page_Load中你有：

Button NouveauBouton = new Button();
NouveauBouton.ID = "Bouton" + i.ToString();
NouveauBouton.Text = "Assigner";
form1.Controls.Add(NouveauBouton);
NouveauBouton.Attributes["ListBox"] = NomListBox.ID;
NouveauBouton.Click += new EventHandler(this.button_Click);

在你的经纪人中：

protected void button_Click(object sender, EventArgs e)
{
    Button button = (Button)sender;
    if (button.Attributes["ListBox"] != null)
    {
        ListBox listBox = (ListBox)this.FindControl(button.Attributes["ListBox"]);
        string selected = listBox.SelectedValue;
        //do stuff
    }
}

将listbox selecteditem分配给button_click

1 个答案: