C# 当复选框结果出现时,如何在选中复选框后减少复选框列表类别?
我有一个我正在做的网站的复选框列表类别。当选中该列表中的复选框时,我希望列表缩小,并显示我选中的结果。我该怎么做 Home.aspxC# 当复选框结果出现时,如何在选中复选框后减少复选框列表类别?,c#,asp.net,webforms,visual-studio-sdk,C#,Asp.net,Webforms,Visual Studio Sdk,我有一个我正在做的网站的复选框列表类别。当选中该列表中的复选框时,我希望列表缩小,并显示我选中的结果。我该怎么做 Home.aspx <asp:CheckBoxList ID="CheckBoxList1" runat="server" DataSourceID="SqlDataSource2" DataTextField="SBrand" DataValueField="SBrand" AutoPostBack="True" SelectedIndexChanged="g
<asp:CheckBoxList ID="CheckBoxList1" runat="server" DataSourceID="SqlDataSource2"
DataTextField="SBrand" DataValueField="SBrand" AutoPostBack="True"
SelectedIndexChanged="gvStock_SelectedIndexChanged"
OnSelectedIndexChanged="CheckBoxList_SelectedIndexChanged"
OnPageIndexChanging="gvStock_PageIndexChanging" CssClass="checkboxlist">
</asp:CheckBoxList>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:DefaultConnection %>"
SelectCommand="SELECT DISTINCT [SBrand] FROM [Stock]">
</asp:SqlDataSource>
Home.aspx.cs
protected void CheckBoxList_SelectedIndexChanged(object sender, EventArgs e)
{
string chkbox = "";
Label1.Visible = false;
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
if (CheckBoxList1.Items[i].Selected == true)
{
if (chkbox == "")
{
chkbox = "'" + CheckBoxList1.Items[i].Text + "'";
}
else
{
chkbox += "," + "'" + CheckBoxList1.Items[i].Text + "'";
}
Label1.Text = chkbox;
string mainconn =
ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
SqlConnection sqlconn = new SqlConnection(mainconn);
string sqlquery = "SELECT [pCode],[pID],[bCode], [SBrand],
[SDescription], [sCost] , [sPrice] , [SType] , [sSupplierName] ,
[sSupplierDirect], [fCost]
FROM Stock
where SBrand in (" + Label1.Text + ")";
SqlCommand sqlcomm = new SqlCommand(sqlquery, sqlconn);
sqlconn.Open();
SqlDataAdapter sda = new SqlDataAdapter(sqlcomm);
DataTable dt = new DataTable();
sda.Fill(dt);
this.gvStock.DataSource = dt;
this.gvStock.DataBind();
}
}
protectedvoid复选框列表\u SelectedIndexChanged(对象发送方,事件参数e)
{
字符串chkbox=“”;
标签1.可见=假;
对于(int i=0;i
我的意思是你的代码有SQL注入错误。@mjwills我该如何继续?你实际上需要从另一个角度来考虑。如果你在选择项目时隐藏未选择的项目,那么你选择的第一件事将隐藏所有其他项目。你需要从隐藏未选择的项目开始工作。这也是一个坏主意nce用户将随着时间的推移更改他们想要的内容。为什么要对用户隐藏潜在的选择?