全选JS：

<script language="javascript" type="text/javascript"> function selectAll(f,mode) { if(mode==true) { for(i=0;i<f.length;i++) { if(f.elements[i].type=="checkbox") { f.elements[i].checked=true; } } } else{ for(i=0;i<f.length;i++) { if(f.elements[i].type=="checkbox") { f.elements[i].checked=false; } } } } </script>

repeater中<input type="checkbox" name="Checkbox1222" onclick="javascript:selectAll(this.form,this.checked)" />实现全选。

<input id="Checkbox1" name="Checkbox1" type="checkbox" value="<%#Eval("ID") %>" />

方法一：<asp:CheckBox ID="CheckBox2" runat="server" />
<asp:Label ID="Label1" runat="server" Visible="false" Text ='<%#Eval("Photoid") %>' ></asp:Label>

LinkButton事件

protected void LinkButton1_Click(object sender, EventArgs e)
{
string checkbox = Request["Checkbox1"];
if (checkbox == null || checkbox == String.Empty)
{
Common.JsUtil.ShowMsgRedirect("请先选择要删除的信件!", "Default.aspx", "1");
}
else
{
String[] CheckboxArray1 = checkbox.Split(',');
for (int i = 0; i < CheckboxArray1.Length; i++)
{
Response.Write(CheckboxArray1[i]);
}
}
}

方法二：<input id="Checkbox1" name="Checkbox1" type="checkbox" value="<%#Eval("Photoid") %>" />

protected void LinkButton1_Click(object sender, EventArgs e)
{
for (int i = 0; i < this.Repeater1.Items.Count; i++)
{
System.Web.UI.WebControls.CheckBox checkbox2 = (System.Web.UI.WebControls.CheckBox)Repeater1.Items[i].FindControl("CheckBox2");
if (checkbox2.Checked == true)
{
System.Web.UI.WebControls.Label labelID = (System.Web.UI.WebControls.Label)this.Repeater1.Items[i].FindControl("Label1");
Response.Write(labelID.Text);
}
}
}