Hello,

Thank you for the provided information.

I have been looking into your question and in order to achieve your requirements and have a tooltip of cells from a specific column or several columns, what I can suggest as an approach is to handle the Tooltip igGrid feature.

First, you'll handle the Template property of the column or columns you want to have a tooltip for their cells. In the template, you will insert a paragraph element with a set class that will contain additional styles about the tooltip and display the information for each cell.

column.For(x => x.Description).HeaderText("Description").DataType("string").Width("400px").Template("<p class='tooltip-grid-notes'>${ Description}</p>");

The paragraph element class for the template column will contain additional white-space, text-overflow, and overflow styles to display the tooltip properly.

.tooltip-grid-notes {
     white-space: nowrap;
     text-overflow: ellipsis;
     overflow: hidden;
}

Then, in the igGrid control's feature definition, you'll add the Tooltip feature.

Features(features =>
         {
             features.Tooltips();
          }
);

In addition, you will handle the Visibility property of the tooltip feature and enable the tooltips to always be displayed by passing TooltipsVisibility.Always.

Features(features =>
         {
             features.Tooltips().Visibility(TooltipsVisibility.Always);
          }
);

You can then handle the ColumnSettings of the tooltip feature and handle the settings for each individual column whether to display a tooltip for it or not according to your requirements. This will be done by handling the AllowTooltips property and passing true or false to display or not display the tooltip.

Features(features =>
         {
             features.Tooltips().Visibility(TooltipsVisibility.Always).ColumnSettings(settings =>
             {
                 settings.ColumnSetting().ColumnKey("CustomerID").AllowTooltips(false);
                 settings.ColumnSetting().ColumnKey("CompanyName").AllowTooltips(false);
                 settings.ColumnSetting().ColumnKey("ContactName").AllowTooltips(false);
                 settings.ColumnSetting().ColumnKey("Address").AllowTooltips(true);
                 settings.ColumnSetting().ColumnKey("City").AllowTooltips(false);
                 settings.ColumnSetting().ColumnKey("Salary").AllowTooltips(false);
                 settings.ColumnSetting().ColumnKey("Description").AllowTooltips(true);
             });
         })

The described scenario could be observed here:

In addition, I have prepared a small sample illustrating this behavior which could be found attached here. Please test it on your side and let me know how it behaves.

Cell templating in ASP.NET often refers to customizing the content and appearance of cells in grid controls or tables. Depending on the framework you are using (Web Forms, MVC, or Blazor), the approach can vary. Here are examples of cell templating for different ASP.NET technologies: 

<asp:GridView ID="gvItems" runat="server" AutoGenerateColumns="False"> <Columns> <asp:TemplateField HeaderText="Title"> <ItemTemplate> <div> <%# Eval("Title") %> </div> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Description"> <Item