asp.net2.0的几个标准控件使用的小技巧
给自己留个记录
1.给删除按钮添加个确认页面
给普通的button按钮和LinkButton增加个确认窗口,只要在他们的OnClickClient属性里写上“return confirm('是否确认删除这个项目?');”就可以了。在GridView和DetailsView控件的TemplateField里添加个delete按钮,也可以用相同的方法实现,但如果使用DetailsView的AutoGenerateDeleteButton="True"生成出来的删除按钮要怎么增加这个确认窗口?因为我们不能在设计窗口里设置自动生成的删除按钮的属性,在网上找了一圈 找到一个方法:
在DetailsView的ItemCreated的事件里写上以下代码
protected void DetailsViewTips_ItemCreated(object sender, EventArgs e)
{
// Test FooterRow to make sure all rows have been created
if (DetailsViewTips.FooterRow != null)
{
// The command bar is the last element in the Rows collection
int commandRowIndex = DetailsViewTips.Rows.Count - 1;
DetailsViewRow commandRow = DetailsViewTips.Rows[commandRowIndex];
// Look for the DELETE button
DataControlFieldCell cell = (DataControlFieldCell)commandRow.Controls[0];
foreach (Control ctl in cell.Controls)
{
LinkButton link = ctl as LinkButton;
if (link != null)
{
if (link.CommandName.ToLower() == "delete")
{
link.ToolTip = "Click here to delete";
link.OnClientClick = "return confirm('Do you really want to delete this record?');";
}
}
}
}
}
{
// Test FooterRow to make sure all rows have been created
if (DetailsViewTips.FooterRow != null)
{
// The command bar is the last element in the Rows collection
int commandRowIndex = DetailsViewTips.Rows.Count - 1;
DetailsViewRow commandRow = DetailsViewTips.Rows[commandRowIndex];
// Look for the DELETE button
DataControlFieldCell cell = (DataControlFieldCell)commandRow.Controls[0];
foreach (Control ctl in cell.Controls)
{
LinkButton link = ctl as LinkButton;
if (link != null)
{
if (link.CommandName.ToLower() == "delete")
{
link.ToolTip = "Click here to delete";
link.OnClientClick = "return confirm('Do you really want to delete this record?');";
}
}
}
}
}
2.GridView的分页
如果Gridview里指定了DataSourceID,那你什么都不用做,所有的分页和排序都能很好的自己实现。但如果是自己使用Gridview.DataSource=source;Gridview.databind();来自己绑定,那你不得不自己实现GridView的PageIndexChanging事件,代码大致是这样的
protected void GridViewEditor_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
DataTable source=..;
GridView.DataSource = source;
GridView.PageIndex =e.NewPageIndex;
GridView.DataBind();
}
{
DataTable source=..;
GridView.DataSource = source;
GridView.PageIndex =e.NewPageIndex;
GridView.DataBind();
}
3.DetailsView的编辑时的控件验证
要使用到验证控件,DetailsView里的只能在他的TemplateField里,而且每个TemplateField里的验证控件也只能找到相同TemplateField里的TextBox等控件,如果想夸Field验证,只能使用CustomValidator控件,然后再实现它的CustomValidator1_ServerValidate事件 类似代码如下:
protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
TextBox tb = (TextBox)DetailsViewEditor.FindControl("TextBoxGPsw");
string psw1 = tb.Text;
tb = (TextBox)DetailsViewEditor.FindControl("TextBoxPassword");
string psw2 = tb.Text;
if (psw1==psw2)
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
{
TextBox tb = (TextBox)DetailsViewEditor.FindControl("TextBoxGPsw");
string psw1 = tb.Text;
tb = (TextBox)DetailsViewEditor.FindControl("TextBoxPassword");
string psw2 = tb.Text;
if (psw1==psw2)
{
args.IsValid = true;
}
else
{
args.IsValid = false;
}
}
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