GridView中增加选择项来作为RadioButton的替代项
1: <asp:GridView ID="grv" runat="server" AutoGenerateColumns="False" >
2:
3: <Columns>
4:
5: <asp:CommandField ShowSelectButton="True" HeaderText="选择" />
6:
7: </Columns>
8:
9: </asp:GridView>
数据绑定时重新将选择项的LinkButton的值显示成RadioButton
1: protected void grv_RowDataBound(object sender, GridViewRowEventArgs e)
2: {
3:
4: if (e.Row.RowType == DataControlRowType.DataRow)
5: {
6:
7: LinkButton lb = (LinkButton)e.Row.Cells[0].Controls[0];
8: lb.Text = "<div><input type=\"radio\" name=\"myRadio\"
onclick=\"Javascript:__doPostBack
9: ('grv','Select￥" + e.Row.RowIndex + "')\"></div>";
10: }
11:
12: }
这样就能通过GridView的选择事件来得到当前选中行,但选择事件执行就会PostBack页面,单选按钮的选中状态会被重置。需要设置一下：
1: protected void grv_SelectedIndexChanged(object sender, EventArgs e)
2: {
3:
4: LinkButton lb = (LinkButton)grv.Rows[grv.SelectedIndex].Cells[0].Controls[0];
5:
6: lb.Text = "<div><input type=\"radio\" name=\"myRadio\"
onclick=\"Javascript:__doPostBack(\"grv \",
7: \"Select￥" + grv.SelectedIndex + "\" )\" checked=\"checked\"></div>";
8:
9: }
这个事件中我们将选中行的LinkButton的值重新再赋值,当然是赋个选中状态的Radio了,不过到这里还是不算完美,因为当你多选几次记录后，你会发现选中状态永远只在最后一条记录上，我们看看页面的源码就会发现，所有选择过的记录的Radio上都有checked=’checked’，因为只允许同时存在一个选中项，所以永远只有最后被写入的那条记录被选中，这不是你想要的结果吧…… 再来解决这个问题，还好GridView有选择项改变前和改变后事件,刚才我们利用了改变后事件,现在就在改变前做做文章了
1: protected void grv_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
2: {
3:
4: if (grv.SelectedIndex > -1)
5: {
6: LinkButton lb = (LinkButton)grv.Rows[grv.SelectedIndex].Cells[0].Controls[0];
7:
8: lb.Text = "<div><input type=\"radio\" name=\"myRadio\"
onclick=\"javascript:__doPostBack
9: ('grv','Select￥" + grv.SelectedIndex + "' )\"></div>";
10:
11: }
12:
13: }
到此就大功告成了！假如想要页面不闪，那就上ajax吧~
转载自：CrazyCoder