protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
ImageButton imgbutton = sender as ImageButton;
if (imgbutton.ImageUrl == "~/image/wr.gif")
{
imgbutton.ImageUrl = "~/image/wr1.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view order by Responsible_person asc";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
else if (imgbutton.ImageUrl == "~/image/wr1.gif")
{
imgbutton.ImageUrl = "~/image/wr2.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view order by Responsible_person desc";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
else if (imgbutton.ImageUrl == "~/image/wr2.gif")
{
imgbutton.ImageUrl = "~/image/wr.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
}
这段代码不知哪里出错了,点击图片时 图片不发生变化
当写成下面这样子时,可以运行
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
ImageButton imgbutton = sender as ImageButton;
if (imgbutton.ImageUrl == "~/image/wr.gif")
{
imgbutton.ImageUrl = "~/image/wr1.gif";
}
else if (imgbutton.ImageUrl == "~/image/wr1.gif")
{
imgbutton.ImageUrl = "~/image/wr2.gif";
}
else if (imgbutton.ImageUrl == "~/image/wr2.gif")
{
imgbutton.ImageUrl = "~/image/wr.gif";
}
}
我想在点击图片时,图片发生变化 而且实现对数据的排序
{
ImageButton imgbutton = sender as ImageButton;
if (imgbutton.ImageUrl == "~/image/wr.gif")
{
imgbutton.ImageUrl = "~/image/wr1.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view order by Responsible_person asc";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
else if (imgbutton.ImageUrl == "~/image/wr1.gif")
{
imgbutton.ImageUrl = "~/image/wr2.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view order by Responsible_person desc";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
else if (imgbutton.ImageUrl == "~/image/wr2.gif")
{
imgbutton.ImageUrl = "~/image/wr.gif";
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
string sql = "select * from task_view";
myconn.Open();
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
}
这段代码不知哪里出错了,点击图片时 图片不发生变化
当写成下面这样子时,可以运行
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
ImageButton imgbutton = sender as ImageButton;
if (imgbutton.ImageUrl == "~/image/wr.gif")
{
imgbutton.ImageUrl = "~/image/wr1.gif";
}
else if (imgbutton.ImageUrl == "~/image/wr1.gif")
{
imgbutton.ImageUrl = "~/image/wr2.gif";
}
else if (imgbutton.ImageUrl == "~/image/wr2.gif")
{
imgbutton.ImageUrl = "~/image/wr.gif";
}
}
我想在点击图片时,图片发生变化 而且实现对数据的排序
{
string mystr = "Data Source=zdxs;Initial Catalog=htoa;User ID=sa;Password=0";
SqlConnection myconn = new SqlConnection(mystr);
myconn.Open();
ImageButton imgbutton = sender as ImageButton;
try{
if (imgbutton.ImageUrl == "~/image/wr.gif")
{
imgbutton.ImageUrl = "~/image/wr1.gif";
string sql = "select * from task_view order by Responsible_person asc";
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
myconn.Close();
}
else if (imgbutton.ImageUrl == "~/image/wr1.gif")
{
imgbutton.ImageUrl = "~/image/wr2.gif";
string sql = "select * from task_view order by Responsible_person desc";
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
}
else if (imgbutton.ImageUrl == "~/image/wr2.gif")
{
imgbutton.ImageUrl = "~/image/wr.gif";
string sql = "select * from task_view";
SqlDataAdapter da = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
da.Fill(ds);
gvData.DataSource = ds.Tables[0];
gvData.DataBind();
}
}
}catch{
处理异常
}finally{
myconn.Close();
}
试试
{
/..........
return;
}
else if
{
..........
return;
}
else
{
return;
}