Disable hyperlink if cell value null in gridview

vignesh t

8y2.6k.NET

I have a grid where columns are populated dynamically. I have a column called ID which will have hyperlink enabled and hyperlinks needs to be disabled if cells value is null or empty.

Code:

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowType == DataControlRowType.DataRow)

{

for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++)

{

string strHeaderRow = GridView1.HeaderRow.Cells[i].Text;

if (strHeaderRow == "ID")

{

string strMktURL = "http://www.address.com";

HyperLink hlColumns = AddHyperLink(e.Row.Cells[i], strMktURL);

}

protected HyperLink AddHyperLink(TableCell cell, string strURL)

{

HyperLink hl = new HyperLink();

hl.Text = cell.Text;

hl.Font.Underline = true;

hl.Target = "_blank";

hl.NavigateUrl = strURL;

hl.Attributes.Add("style", "color:Black;");

cell.Controls.Add(hl);

return hl;

}

Please suggest how this can be achieved.

5 Replies

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Manav Pandya8y ago
ID Column you are using never be null bcoz its text ,

Do not convert headertext to text , and than try to check weather its null or not
vignesh t8y ago
I debugged and each time when it comes into the loop it only gives the headercell text and doesn't look for that respective column cell.
Manav Pandya8y ago
Try to put debug point and let me show screenshot for that

or else try :
if (strHeaderRow != null || strHeaderRow != "" )
{
    string strMktURL = "http://www.address.com";
    HyperLink hlColumns = AddHyperLink(e.Row.Cells[i], strMktURL);
    if(strHeaderRow == "ID")
    {
        hlColumns.visible=true;
    }
}
else
{
       hlColumns.visible=false;
}
Thanks
vignesh t8y ago
I tried it and still it shows hyperlink for cell with null values. Also strHeaderRow will have text of header row and I need to check its respective columns values and I don't think that's happening.
Manav Pandya8y ago
Hello

You can write like this :
if (strHeaderRow == "ID")
{
    if(strHeaderRow !=null || strHeaderRow != "" )
    {
        string strMktURL = "http://www.address.com";
        HyperLink hlColumns = AddHyperLink(e.Row.Cells[i], strMktURL);
        hlColumns.visible=true;
    }
    else
    {
        hlColumns.visible=false;
    }
}
Thanks