我在我的 asp.net 页面中有一个树视图，当我取消选择单个子节点并选择其他节点时，始终未选择父节点。如果我取消选择了另一个子节点并再次选择它，那么父节点也会选择。我不知道为什么会出现这个问题？==================================================== =================================
public partial class frmTabMenuManagement : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindMenu();
}
}
public void BindMenu()
{
AdminMenuLogic al = new AdminMenuLogic();
al.Description = "";
ddlParentMenu.DataSource = al.FilterAdminMenu();
ddlParentMenu.DataTextField = "Description";
ddlParentMenu.DataValueField = "Id";
ddlParentMenu.DataBind();
ddlParentMenu.Items.Insert(0, new ListItem("As Parent", "0"));
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
AdminMenuLogic amt = new AdminMenuLogic();
if (btnSubmit.Text == "Submit")
{
if (txtMenuLink.Text == "")
{
Response.Write("<script language='javascript'>alert(' Menu Description Cannot be left Empty');</script>");
}
else if (txtDestinationLink.Text == "")
{
Response.Write("<script language='javascript'>alert(' Destination Link Cannot be left Empty');</script>");
}
else
{
amt.Description = txtMenuLink.Text;
amt.IsActive = Convert.ToString(ddlIsActive.SelectedItem);
amt.Url = txtDestinationLink.Text;
amt.Parent = Convert.ToInt32(ddlParentMenu.SelectedValue);
amt.saveAdminMenu();
Response.Write("<script language='javascript'>alert('" + amt.OutPut + "');</script>");
txtMenuLink.Text = "";
txtDestinationLink.Text = "";
BindMenu();//reflect instant changes
}
}
else if (btnSubmit.Text == "Update")
{
amt.id = Convert.ToInt32(gvSearch.SelectedRow.Cells[1].Text);
amt.Description = txtMenuLink.Text;
amt.IsActive = Convert.ToString(ddlIsActive.SelectedItem);
amt.Url = txtDestinationLink.Text;
amt.Parent = Convert.ToInt32(ddlParentMenu.SelectedValue);
amt.UpdateAdminMenu();
Response.Write("<script language='javascript'>alert('" + amt.OutPut + "');</script>");
txtMenuLink.Text = "";
txtDestinationLink.Text = "";
bindGrid();
btnSubmit.Text = "Submit";
BindMenu();//reflect instant changes
}
}
protected void btnSearch_Click(object sender, EventArgs e)
{
if (btnSubmit.Text == "Update")
{
btnSubmit.Text = "Submit";
txtMenuLink.Text = "";
txtDestinationLink.Text = "";
}
bindGrid();
}
protected void gvSearch_SelectedIndexChanged(object sender, EventArgs e)
{
TabContainer1.ActiveTabIndex = 0;
ddlParentMenu.Items.Add(gvSearch.SelectedRow.Cells[3].Text);
ddlParentMenu.SelectedValue = gvSearch.SelectedRow.Cells[3].Text;
txtMenuLink.Text = Regex.Replace(gvSearch.SelectedRow.Cells[2].Text, "amp;", "");
txtDestinationLink.Text = Regex.Replace(gvSearch.SelectedRow.Cells[4].Text, "amp;", "");
ddlIsActive.SelectedValue = gvSearch.SelectedRow.Cells[5].Text;
btnSubmit.Text = "Update";
}
protected void txtMenuLink_TextChanged(object sender, EventArgs e)
{
if (char.IsWhiteSpace(txtMenuLink.Text.First()))
{
txtMenuLink.Text = Regex.Replace(txtMenuLink.Text, " ", "");
}
}
protected void txtDestinationLink_TextChanged(object sender, EventArgs e)
{
try
{
if (char.IsWhiteSpace(txtDestinationLink.Text.First()))
{
txtDestinationLink.Text = Regex.Replace(txtDestinationLink.Text, " ", "");
}
}
catch (Exception ex)
{
}
}
protected void ddlParentMenu_SelectedIndexChanged(object sender, EventArgs e)
{
}
protected void gvSearch_RowDataBound(Object sender, GridViewRowEventArgs e)
{
GridViewRow row = e.Row;
if (row.RowType == DataControlRowType.Header)
{
e.Row.Cells[1].Visible = false;
// e.Row.Cells[3].Visible = false;
}
if (row.RowType == DataControlRowType.DataRow)
{
e.Row.Cells[1].Visible = false;
// e.Row.Cells[3].Visible = false;
}
}
protected void gvSearch_PageIndexChanging(Object sender, GridViewPageEventArgs e)
{
gvSearch.PageIndex = e.NewPageIndex;
bindGrid();
}
protected void gvSearch_PageIndexChanged(Object sender, EventArgs e)
{
}
void bindGrid()
{
AdminMenuLogic al = new AdminMenuLogic();
al.Description = txtSearch.Text;
gvSearch.DataSource = al.FilterAdminMenu();
gvSearch.DataBind();
}
protected void ddlIsActive_SelectedIndexChanged(object sender, EventArgs e)
{
}
}