Disable hyperlink if cell value null in gridview

Question

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. 

Answer 1

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 

 

Answer 2

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 

Answer 3

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.

Answer 4

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 

Answer 5

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.