CODEWITHSUNDEEP
c#visual-studio-2012datagridview
user3775124
user3775124

Reputation:

Add a ToolTip to Data GridView

How can I add a Tooltip to Data GridView in C# using Visual Studio 2012?

I want to put it in the header cells I don't see any place in HeaderStyle.

how can i do that?

Upvotes: 0

Views: 10928

Answers (2)

TaW
TaW

Reputation: 54453

Each Column has a Property HeaderCell of type DataGridViewHeaderCell.

You can set its ToolTipText like this:

dataGridView1.Columns[columnIndexOrName].HeaderCell.ToolTipText = "OK";

Upvotes: 1

Nick N.
Nick N.

Reputation: 13578

Specific cell

You can add a tooltip to the DataGridViewCell

http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcell.tooltiptext(v=vs.110).aspx

Use the CellFormatting event as demonstrated on MSDN:

void dataGridView1_CellFormatting(object sender, 
    DataGridViewCellFormattingEventArgs e)
{
    if ( (e.ColumnIndex == this.dataGridView1.Columns["Rating"].Index)
        && e.Value != null )
    {
        DataGridViewCell cell = 
            this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
        if (e.Value.Equals("*"))
        {                
            cell.ToolTipText = "very bad";
        }
        else if (e.Value.Equals("**"))
        {
            cell.ToolTipText = "bad";
        }
        else if (e.Value.Equals("***"))
        {
            cell.ToolTipText = "good";
        }
        else if (e.Value.Equals("****"))
        {
            cell.ToolTipText = "very good";
        }
    }
}

You may have to set the ShowCellToolTips property on the datatable to true;

Entire row

If you want to set a tooltip on the entire header row then use something like this:

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
    // I assumed the header row was the first row, that explains the check for 0, change it if needed.
    if (e.Row.RowType == DataControlRowType.DataRow && e.Row.Index == 0)
    {
        e.Row.ToolTip = "Header tooltip";
         //or (e.g. for web)
        e.Row.Attributes.Add("title", "Header tooltip");
    }
 }

Upvotes: 3

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