为什么我的 no-submit (HtmlButton) 仍然提交?
Why does my no-submit (HtmlButton) still submit?
我想动态地使一直存在但最初隐藏的行可见。
我尝试了 client-side (jQuery) 路线,但遇到了问题。
我更愿意走 server-side (C#) 道路,我认为我已经找到了基于 和这段代码来完成它的方法:
HtmlButton btnAddFoapalRow = null;
. . .
btnAddFoapalRow = new HtmlButton();
btnAddFoapalRow.Attributes["type"] = "button";
btnAddFoapalRow.InnerHtml = "+";
btnAddFoapalRow.ID = "btnAddFoapalRow";
btnAddFoapalRow.ServerClick += new EventHandler(btnAddFoapalRow_Click);
this.Controls.Add(btnAddFoapalRow);
private void btnAddFoapalRow_Click(object sender, EventArgs e)
{
try
{
ShowNextFoapalRow();
}
catch (Exception ex)
{
String s = String.Format("Exception occurred: {0}", ex.Message); // TODO: Log this somewhere
}
}
//// This only works the first time, because it causes the page to be reloaded, setting foapalRowsShowing back to 2
private void ShowNextFoapalRow()
{
switch (foapalRowsShowing)
{
case 2:
foapalrow3.Visible = true;
foapalRowsShowing = 3;
break;
case 3:
foapalrow4.Visible = true;
foapalRowsShowing = 4;
btnAddFoapalRow.Disabled = true;
break;
}
}
foapalrow3 = new HtmlTableRow();
foapalrow3.ID = "foapalrow3";
foapalrow3.Visible = false;
. . .
foapalrow3 = new HtmlTableRow();
foapalrow3.ID = "foapalrow3";
foapalrow3.Visible = false;
...但不行 - 第一次使第二行可见,但随后对“+”HtmlButton 的混搭不会使第三行可见。通过代码,我明白了原因:每次我按下按钮时都会提交页面 ,因此初始代码再次运行,将可见行数设置回两行,并始终使第 3 行可见(从不使第 4 行可见)。
这是按下按钮后的样子,无论我按下按钮多少次(应该再添加一行,但从来没有):
顺便说一句,第 1 行是列标题行;第 2 行是默认可见的单行; row3 和 row4 存在,但起初不可见。
尝试使用
btnAddFoapalRow.Attributes.Add("onclick", "return false;");
我想动态地使一直存在但最初隐藏的行可见。
我尝试了 client-side (jQuery) 路线,但遇到了问题。
我更愿意走 server-side (C#) 道路,我认为我已经找到了基于
HtmlButton btnAddFoapalRow = null;
. . .
btnAddFoapalRow = new HtmlButton();
btnAddFoapalRow.Attributes["type"] = "button";
btnAddFoapalRow.InnerHtml = "+";
btnAddFoapalRow.ID = "btnAddFoapalRow";
btnAddFoapalRow.ServerClick += new EventHandler(btnAddFoapalRow_Click);
this.Controls.Add(btnAddFoapalRow);
private void btnAddFoapalRow_Click(object sender, EventArgs e)
{
try
{
ShowNextFoapalRow();
}
catch (Exception ex)
{
String s = String.Format("Exception occurred: {0}", ex.Message); // TODO: Log this somewhere
}
}
//// This only works the first time, because it causes the page to be reloaded, setting foapalRowsShowing back to 2
private void ShowNextFoapalRow()
{
switch (foapalRowsShowing)
{
case 2:
foapalrow3.Visible = true;
foapalRowsShowing = 3;
break;
case 3:
foapalrow4.Visible = true;
foapalRowsShowing = 4;
btnAddFoapalRow.Disabled = true;
break;
}
}
foapalrow3 = new HtmlTableRow();
foapalrow3.ID = "foapalrow3";
foapalrow3.Visible = false;
. . .
foapalrow3 = new HtmlTableRow();
foapalrow3.ID = "foapalrow3";
foapalrow3.Visible = false;
...但不行 - 第一次使第二行可见,但随后对“+”HtmlButton 的混搭不会使第三行可见。通过代码,我明白了原因:每次我按下按钮时都会提交页面 ,因此初始代码再次运行,将可见行数设置回两行,并始终使第 3 行可见(从不使第 4 行可见)。
这是按下按钮后的样子,无论我按下按钮多少次(应该再添加一行,但从来没有):
顺便说一句,第 1 行是列标题行;第 2 行是默认可见的单行; row3 和 row4 存在,但起初不可见。
尝试使用 btnAddFoapalRow.Attributes.Add("onclick", "return false;");