我的网络上有一个gridview,并且在模板字段中有复选框。我在数据库中有一个字段,它保存整数值0或1. 0表示启用,1表示禁用。当我选中我的复选框时,它会在数据库中为该特定字段插入1,反之亦然。现在,当我打开此页面时,我想要这样,因此表中值为1的行应保持选中状态,表中值为0的行应保持未选中状态。我试过这样做 - 这是我的aspx页面 -
<asp:GridView ID="GridMain" runat="server" Width="1000px"
AutoGenerateColumns="False" onrowdatabound="GridMain_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="Student Name">
<ItemTemplate>
<asp:Label ID="lblname" runat="server" Text='<%# Eval("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Enable/Disable">
<ItemTemplate>
<asp:CheckBox ID="chkenbl" runat="server" AutoPostBack="True"
oncheckedchanged="chkenbl_CheckedChanged"
Checked='<%# Convert.ToBoolean(Eval("en_dis")) %>' />
<br />
<asp:Label ID="Label1" runat="server" Text='<%# Eval("id") %>'></asp:Label>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("en_dis") %>'
Visible="False"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
这是我的cs页面 -
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
show();
}
//chkbind();
}
public void show()
{
try
{
dt = g1.return_dt("select id,name,en_dis from tbl_data_show order by name");
if (dt.Rows.Count > 0)
{
adsource = new PagedDataSource();
adsource.DataSource = dt.DefaultView;
adsource.PageSize = 5;
GridMain.DataSource = adsource;
GridMain.DataBind();
}
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
protected void chkenbl_CheckedChanged(object sender, EventArgs e)
{
CheckBox chk = (CheckBox)sender;
//CheckBox chk = sender as CheckBox;
//CheckBox chk = (CheckBox)row.FindControl("chkenbl");
GridViewRow row = (GridViewRow)chk.NamingContainer;
if (chk.Checked)
{
try
{
//Label lblid = (Label)GridMain.FindControl("Label1");
//Label lblid = new Label();
//lblid.Text = GridMain.FindControl("Label1").ToString();
string lblid = ((Label)row.FindControl("Label1")).Text;
rows = g1.ExecDB("update tbl_data_show set en_dis='1' where id=" + lblid);
if (rows > 0)
{
Response.Write("Rows Effected Successfull.");
}
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
else
{
//Label lblid1 = (Label)GridMain.FindControl("Label1");
//Label lblid1 = new Label();
//lblid1.Text = GridMain.FindControl("Label1").ToString();
string lblid1 = ((Label)row.FindControl("Label1")).Text;
rows = g1.ExecDB("update tbl_data_show set en_dis='0' where id=" + lblid1);
if (rows > 0)
{
Response.Write("Rows Effected Successfull.");
}
}
}
protected void GridMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
dt = g1.return_dt("select en_dis from tbl_data_show");
if (dt.Rows.Count > 0)
{
// CheckBox chk1 = new CheckBox();
CheckBox chk1 = (CheckBox)e.Row.FindControl("chkenbl");
//CheckBox
if (dt.Rows[0]["en_dis"] == "0")
{
chk1.Checked = false;
}
else
{
chk1.Checked = true;
}
}
}
}
请指导我在哪里做错了?
答案 0 :(得分:1)
在标记中,您可以添加Checked='<%# Convert.ToBoolean(Eval("en_dis")) %>'
。见下面的例子:
<asp:CheckBox ID="chkenbl" runat="server" AutoPostBack="True" Checked='<%# Convert.ToBoolean(Eval("en_dis")) %>' oncheckedchanged="chkenbl_CheckedChanged" />
或
OnRowDataBound
事件。 en_dis
列的值。答案 1 :(得分:0)
您无法在页面加载事件中选中复选框,您必须像这样使用rowdatabound
protected void GridViewRowEventHandler(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
//here comes your code for checking or make it unchecked
}
}
在asp中你可以做到这一点
<asp:GridView OnRowDataBound="GridViewRowEventHandler"....>
希望能帮到你
答案 2 :(得分:0)
要根据数据库中存储的值首先检查复选框,您需要在数组或数据表等中获取这些值。 然后在数据绑定到gridview之后,您需要使用此代码。
for (int i = 0; i < gvShowReport.Rows.Count; i++)
{
if(vdt.Rows[i]["status"].ToString()=="True")
{
CheckBox CheckRow = ((CheckBox)gvShowReport.Rows[i].FindControl("cbCheckRow"));
CheckRow.Checked = true;
}
else
{
CheckBox CheckRow = ((CheckBox)gvShowReport.Rows[i].FindControl("cbCheckRow"));
CheckRow.Checked = false;
}
}
gvShowReport是gridview控件的id,vdt是包含状态列的数据表,其值为0(False)和1(True)