I want to apply CSS (want to apply color) to last row of grid view

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I Want To Display Last Column Of Grid View In Color Format.
I.e I want to apply Css on Last Column Of gridview

I Have Created Stored Procedure To Bind Data With Gridview
Its Working Fine

What I have tried:

I Have Created Css Class As

<style>
        .highlighted 
  {
     color:Red ! important;
     background-color: blue ! important;
  }
    </style>
</head>

then On PreRender Event Of Gridview Control I have wriiten Code as

protected void GridView1_PreRender1(object sender, EventArgs e)
        {

            try
            {
                GridViewRow getRow = GridView1.Rows[GridView1.Rows.Count - 1];
                getRow.Attributes.Add("class", "highlighted");
            }
            catch(Exception ex)
            {
                Response.Write(ex);
            }
}

It Showing Exception in Gridview1_prerender as

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: in

Posted 14-Jul-17 21:40pm

paul_vin

Updated 15-Jul-17 2:33am

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Afzaal Ahmad Zeeshan · Answer 1 · 2017-07-15T02:33:00

From where I see this, the problem is with the hardcoded [...Count - 1] thing, why do that in the first place, and leave it exposed to several conditions? For example, what will happen if the Count property is zero (the list is empty?). Instead of this, I would personally try using this,

C#

GridViewRow row = null;
if(GridView1.Rows.Count == 0) {
   // Handle the empty grid
} else if (GridView1.Rows.Count == 1) {
   row = GridView1.Rows[0]; // Capture this row, or ignore the single row.
} else if (GridView1.Rows.Count > 1) {
   row = GridView1.Rows[GridView1.Rows.Count - 1];
}

if(row != null) {
   // Check if there is a row
   row.Attributes.Add("class", "highlighted");
}

This should properly ensure that your problems are targeted and there is a solution, that the code can take to prevent code crashes.