小项目要用到多选,修改相关数据记录:
效果如下:
具体实现如下:
用到了GridView控件。
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GridView是一个提供相关数据库操作的控件,MSDN解释:猛击此处
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具体操作如下:
a.aspx关键代码:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderWidth="0px" Width="701px" ForeColor="Blue" Height="182px"> <Columns> <asp:TemplateField> <ItemTemplate> <asp:CheckBox ID="CheckBox1" runat="server" /> <asp:HiddenField ID="HidID" runat="server" Value='<%# Bind("id") %> ' /> <asp:Label ID="Label1" runat="server" style="font-size:12px;color:#3344ff" Text='<%# Bind("content") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView>
b.aspx后台关键代码:(按钮触发)
//给GridView绑定数值
public void bind()
{
string sql;
sql = "select id, content from intro";
GridView1.DataSource = access.GreatDs(sql);
GridView1.DataBind();
}
protected void Button1_Click(object sender, EventArgs e) { int rowCount = GridView1.Rows.Count; string str = ConfigurationManager.ConnectionStrings["kuny"].ConnectionString; OleDbConnection conn = new OleDbConnection(str); conn.Open(); int tag = 0; for (int i = 0; i < rowCount; i++) { CheckBox tempChk = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1"); HiddenField HidID = (HiddenField)GridView1.Rows[i].FindControl("HidID"); if (tempChk.Checked == true) { string update_exam_item = "update baoming_info set bk_exerm_id" + HidID.Value + "=" + "1" + " where bk_exer_id=" + Session["StuID"]; //alert(update_exam_item); OleDbCommand cmd = new OleDbCommand(update_exam_item, conn); cmd.ExecuteNonQuery(); tag++; } } if (tag == 0) { alert("您至少需要选择一项考试项目!"); } else { conn.Close(); Response.Redirect("step_1.aspx"); } }
总结:
for (int i = 0; i < rowCount; i++) {
//遍历取checkbox以及隐藏text的值 CheckBox tempChk = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1"); HiddenField HidID = (HiddenField)GridView1.Rows[i].FindControl("HidID");
// if (tempChk.Checked == true) { string update_exam_item = "update baoming_info set bk_exerm_id" + HidID.Value + "=" + "1" + " where bk_exer_id=" + Session["StuID"]; //alert(update_exam_item); OleDbCommand cmd = new OleDbCommand(update_exam_item, conn); cmd.ExecuteNonQuery(); tag++; } }
总结下,先要用GridView控件,并为它绑定数据源bind(),在gridview的属性TemplateField、ItemTemplate添加相应的checkbox等,再用button事件触发,进行相关操作