从基于数据库的复选框列表选择获取错误获取数据 [英] Fetch data from database based checkboxlist selection getting error

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问题描述

您好我有一个复选框列表,其中一个复选框是手机,另一个是笔记本电脑。

如果我在手机上查看它将把所有手机从DB带到我的DAtList

如果我在笔记本电脑上查看它会将所有手机从DB带到我的DAtList

这里ID为代码

.aspx

< asp:CheckBoxList ID =CheckBoxList1runat =serverAutoPostBack =TrueOnSelectedIndexChanged =CheckBoxList1_SelectedIndexChanged>

< asp:ListItem Value =0> Mobiles

< asp:ListItem Value =1>笔记本电脑



.aspx.cs

protected void CheckBoxList1_SelectedIndexChanged(object发件人,EventArgs e)

{



List< string> GetList = new List< string>();

foreach(CheckBoxList1.Items中的ListItem项目)

{

if(item.Selected)

{

GetList.Add(item.Value);

}

}

string str =select * from ProductDetails where Producttype = @ textInput;

SqlCommand cmd = new SqlCommand(str,con);

cmd.Parameters.Add( new SqlParameter(@ textInput,0));

for(int d = 0; d< GetList.Count; d ++)

{

string text = GetList [d];

cmd.Parameters [@ textInput]。Value = text;

SqlDataAdapter da = new SqlDataAdapter(cmd);

DataSet ds = new DataSet();

da.Fill(ds);

if(count == 0)

{



dc = ds.Clone();

count ++;

}

for(int i = 0;我< ds.Tables [0] .Rows.Count; i ++)

{

if(ds.Tables [0] .Rows [i] .ItemArray [0] .ToString()!=NULL)

dc.Tables [0] .ImportRow(ds.Tables [0] .Rows [i]);

}

DataList1.DataSource = ds。表[0] .DefaultView;

DataList1.DataBind();

}

}

}

Hi I have 1 checkbox list in that one check box is mobiles and another one is Laptops.
If I check on mobile It wil brings all mobile from DB to My DAtList
If I check on laptop It wil brings all mobile from DB to My DAtList
Here id the code
.aspx
<asp:CheckBoxList ID="CheckBoxList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="CheckBoxList1_SelectedIndexChanged">
<asp:ListItem Value="0">Mobiles
<asp:ListItem Value="1">Laptop

.aspx.cs
protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
{

List<string> GetList = new List<string>();
foreach (ListItem item in CheckBoxList1.Items)
{
if (item.Selected)
{
GetList.Add(item.Value);
}
}
string str = "select * from ProductDetails where Producttype=@textInput";
SqlCommand cmd = new SqlCommand(str, con);
cmd.Parameters.Add(new SqlParameter("@textInput", 0));
for (int d = 0; d < GetList.Count; d++)
{
string text = GetList[d];
cmd.Parameters["@textInput"].Value = text;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
if (count == 0)
{

dc = ds.Clone();
count++;
}
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
if (ds.Tables[0].Rows[i].ItemArray[0].ToString() != "NULL")
dc.Tables[0].ImportRow(ds.Tables[0].Rows[i]);
}
DataList1.DataSource = ds.Tables[0].DefaultView;
DataList1.DataBind();
}
}
}

推荐答案

检查

GetList.Add(item.Value);
Check syntax of
GetList.Add(item.Value);


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