Show how to add script to the client in aspx file.
/// <param name="rbl">RadioButtonList to apply script to</param> /// <param name="page">The Page the script is going to be appended to</param> /// <param name="script">The script to append</param> public static void SetRadioButtonListItemScript(RadioButtonList rbl, Page page, string script)
{
for (int idx = 0; idx < rbl.Items.Count; idx++)
{
RegisterClientObjectFunction(page, rbl, idx, script);
}
}
/// <param name="page">The Page the script is going to be appended to</param> /// <param name="rbl">RadioButtonList to apply script to</param> /// <param name="idx">the index of the radio button</param> /// <param name="script">The script to append</param> static private void RegisterClientObjectFunction(Page page, RadioButtonList rbl, int idx, string script)
{
StringBuilder sw = new StringBuilder();
if (!page.IsStartupScriptRegistered(rbl.ClientID + "_" + idx.ToString() + "script"))
{
sw.Append(@"<SCRIPT>");
sw.Append(@"document.getElementById('" + rbl.ClientID + "_" + idx.ToString() + "').onclick=function() {" + script + "return true;}");
sw.Append(@"</SCRIPT>");
page.RegisterStartupScript(rbl.ClientID + "_" + idx.ToString() + "script", sw.ToString());
}
}
static private void RegisterClientObjectFunction(Page page, CheckBox chk, string script)
{
StringBuilder sw = new StringBuilder();
if (!page.IsStartupScriptRegistered(chk + "script"))
{
sw.Append(@"<SCRIPT>");
sw.Append(@"document.getElementById('"+chk.ClientID + "').onclick=function() {" + script + "return true;}");
sw.Append(@"</SCRIPT>");
page.RegisterStartupScript(chk.ClientID + "script", sw.ToString());
}
}
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Use a ComboBox to select an item, and save the selected item's value to some textboxes. each control is using databinding.
Problems:
1. set control's value when comboBox changed, after the comboBox lost focus, the text was lost since the controls reload the data from binding source.
2. set binding source's value, the text will be set only when the comboBox lost focus. but we want to set the text immediately when the comboBox changed.
Solution:
set binding source's value, and call comboBox's writeValue for comboBox. this will write the comboBox's value to datasource, and reload all controls' value.
Test selectedTest = (Test)comboBox1.SelectedItem;
Test test = (Test)bindingSource1.DataSource;
if (selectedTest == null || test == null)
return;
//save the selected value to the binding source test.Name = selectedTest.Name; test.Value = selectedTest.Value; //this will write the comboBox's value to datasource, and reload all controls' value comboBox1.DataBindings["SelectedValue"].WriteValue();
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