请问如何更改图标?

[stvvv]

.Net2003 C#： 在新闻列表中(由程序生成table然后填充内容)，想实现当鼠标在标题上面时，就更改标题左边的图标，当鼠标移开后，图标恢复原样。
请问怎么实现？

C#中代码：
for ( int i = 0; i < newsCount; i++ )
{
TableRow tr = new TableRow();
TableCell tc = new TableCell();
//图标
tc.HorizontalAlign = HorizontalAlign.Left;
tc.Width = 20;
tc.Text = "<img id=img" + i + " src=images/img1.gif>";
tr.Cells.Add( tc );
//新闻标题
tc = new TableCell();
tc.HorizontalAlign = HorizontalAlign.Left;
string title = newsRows[ i ][ NewsData.TITLE_FIELD ].ToString();
tc.Text = "<a href=News.aspx?ID=" + newsRows[ i ][ NewsData.PKID_FIELD ] />";
tr.Cells.Add( tc );
……


谢谢!!

[阿非]

你说的标题指的是title 么 这段代码没看到 title显示在网页上

[stvvv]

对不起，放上来时搞错了。
标题就是上面的变量"title"，

C#中代码：
for ( int i = 0; i < newsCount; i++ )
{
TableRow tr = new TableRow();
TableCell tc = new TableCell();
//图标
tc.HorizontalAlign = HorizontalAlign.Left;
tc.Width = 20;
tc.Text = "<img id=img" + i + " src=images/img1.gif>";
tr.Cells.Add( tc );
//新闻标题
tc = new TableCell();
tc.HorizontalAlign = HorizontalAlign.Left;
string title = newsRows[ i ][ NewsData.TITLE_FIELD ].ToString();
tc.Text = "<a href=NewsContent.aspx?ID=" + newsRows[ i ][ NewsData.PKID_FIELD ] + " onmouseover='changeImg(Y,img" + i +")' >" + title "</a>";
tr.Cells.Add( tc );
……

谢谢!!

[stvvv]

晕。。。

C#中代码：
for ( int i = 0; i < newsCount; i++ )
{
TableRow tr = new TableRow();
TableCell tc = new TableCell();
//图标
tc.HorizontalAlign = HorizontalAlign.Left;
tc.Width = 20;
tc.Text = "<img id=img" + i + " src=images/img1.gif>";
tr.Cells.Add( tc );
//新闻标题
tc = new TableCell();
tc.HorizontalAlign = HorizontalAlign.Left;
string title = newsRows[ i ][ NewsData.TITLE_FIELD ].ToString();
tc.Text = "<a href=NewsContent.aspx?ID=" + newsRows[ i ][ NewsData.PKID_FIELD ] + " />" + title + "</a>";
tr.Cells.Add( tc );
……

[JGood]

用javascript来实现
onmouseover="javascript:document.getElementById('imageId').src = /*图片地址*/;"
onmouseout = "javascript:document.getElementById('imageId').src = /*图片地址*/;"

[stvvv]

写成下面这样子,可还是没反应。。。

tc.Text = "<a href=News.aspx?newsID=" + newsRows[ i ][ NewsData.PKID_FIELD ] + " onmouseover=\"javascript:document.getElementById('img" + i + "').src=images/" + "img1.gif\"; onmouseout=\"javascript:document.getElementById('img" + i + "').src=images/" + "img2.gif\"; >" + title + "</a>";

[Ny-6000]

对了,
还可以采用AJAX技术来实现.

[阿非]

        int i = 1;
        Table t = new Table();        
        TableRow tr = new TableRow();
        TableCell tc = new TableCell();
        tc.Text = "<img id='img"+i.ToString()+"' src='img"+i.ToString()+".jpg'>";
        tr.Cells.Add(tc);
        tc = new TableCell();
        tc.Text = "<a href='#1'  onmouseover = 'changePic(" + i.ToString() + ")'  onmouseleave = 'changeImg(" + i.ToString() + ")' >显示img" + i.ToString() + " </a> ";
        tr.Cells.Add(tc);
        t.Rows.Add(tr);
        i++;
        tr = new TableRow();
        tc = new TableCell();
        tc.Text = "<img id='img" + i.ToString() + "' src='img" + i.ToString() + ".jpg'>";
        tr.Cells.Add(tc);
        tc = new TableCell();
        tc.Text = "<a href='#1'  onmouseover = 'changePic(" + i.ToString() + ")'  onmouseleave = 'changeImg(" + i.ToString() + ")' >显示img" + i.ToString() + " </a> ";
        tr.Cells.Add(tc);
        t.Rows.Add(tr);
        this.Controls.Add(t);

    function changePic(id)
    {
    var str='img'+id;
    document.getElementById(str).src='img.jpg'
    }
    function changeImg(id)
    {
    var str='img'+id;
    var src='img'+id+'.jpg';
    document.getElementById(str).src=src;
    }

[此鱼非彼鱼]

很好,很强大.