显示DevExpress网格单元的工具提示 [英] Show tool-tips for DevExpress grid cells

问题描述

我使用一个DevExpress网格，我想显示工具提示 for 每个单元格 我将光标悬停在它上面。我为编写了一个代码。它工作正常并显示工具提示。但是工具提示 没有改变而我'  m将光标移动到同一行。 （水平移动）。但如果我离开当前行并返回，则工具提示会发生变化。请建议我。 
 
这是toolTipController的代码（为了更好地理解，我复制了整个方法） 

 private void toolTipController1_GetActiveObjectInfo（object sender，ToolTipControllerGetActiveObjectInfoEventArgs e）
 {
 bool validColumn = false; 
 if（e.SelectedControl！= gridControl1）
 return; 
 
 GridHitInfo hitInfo = gridView1.CalcHitInfo（e.ControlMousePosition）; 
 
 if（hitInfo.InRow == false）
 return; 
 
 if（hitInfo.Column == null）
 return; 
 
 //仅涉及以下字段
 if（hitInfo.Column.FieldName ==Monday|| hitInfo.Column.FieldName ==Tuesday|| hitInfo.Column.FieldName ==星期三|| hitInfo.Column.FieldName ==Thursday|| hitInfo.Column.FieldName ==Friday）
 validColumn = true; 
 
 if（！validColumn）
 return; 
 
 string toolTip = string.Empty; 
 SuperToolTipSetupArgs toolTipArgs = new SuperToolTipSetupArgs（）; 
 toolTipArgs.Title.Text = string.Empty; 
 
 //从这一行获取数据
 string columnCaption = hitInfo.Column.Caption; 
 DateTime dateOK = new DateTime（2000,1,1）; 
 if（DateTime.TryParse（columnCaption，out dateOK））
 {
 
 DateTime date = DateTime.Parse（columnCaption）; 
 int row = hitInfo.RowHandle; 
 long teacherID = long.Parse（gridView1.GetRowCellValue（row，TeacherID）。ToString（））; 
 
 GuaranteedDay gDay = db.GuaranteedDays.Where（p => p.Date == date&& p.TeacherID == teacherID&& p.Type == 5）.FirstOrDefault （）; 
 if（gDay！= null）
 {
 if（gDay.Note！= string.Empty）
 {
 //设置工具提示的描述
 string description = string.Empty; 
 int type = gDay.Type; 
开关（类型）
 {
案例1：
 description =保证提供; 
休息; 
案例2：
 description =保证; 
休息; 
案例3：
 description =texted; 
休息; 
案例4：
 description =available; 
休息; 
案例5：
 description =不可用; 
休息; 
} 
 //添加备注&工具提示说明
 toolTip =注意：+ gDay.Note +\ nDescription：+ description; 
 
 string BodyText = toolTip; 
 
 toolTipArgs.Contents.Text = BodyText; 
 e.Info = new ToolTipControlInfo（）; 
 e.Info.Object = hitInfo.HitTest.ToString（）+ hitInfo.RowHandle.ToString（）; 
 e.Info.ToolTipType = ToolTipType.SuperTip; 
 e.Info.SuperTip = new SuperToolTip（）; 
 e.Info.SuperTip.Setup（toolTipArgs）; 
} 
} 
} 
} 
} 

感谢您的帮助，

Kushan Randima。

软件工程师

Davton Ltd

解决方案

 e.Info.Object = hitInfo.HitTest.ToString（）+ hitInfo.RowHandle.ToString（）+ hitInfo.Column.FieldName; 

我按如下方式更改了代码。现在，工具提示正在为网格视图中的每个单元格进行刷新。

 e.Info.Object = hitInfo.HitTest.ToString（）+ hitInfo.RowHandle.ToString（）+ hitInfo.Column.FieldName; 

I am using a DevExpress grid and I Would like to display a tooltip for each cell as I hover the cursor over it. I have written a code for that. It works fine and show tool-tips. But the tool tip is not changing while I'm moving the cursor on the same row. (Moving Horizontally). But if I leave the current row and come back, then the tool tip changes. Please advise me.

Here is the code for "toolTipController" (I have copied the whole method for a better understanding)

private void toolTipController1_GetActiveObjectInfo(object sender, ToolTipControllerGetActiveObjectInfoEventArgs e)
    {
        bool validColumn = false;
        if (e.SelectedControl != gridControl1)
            return;

        GridHitInfo hitInfo = gridView1.CalcHitInfo(e.ControlMousePosition);

        if (hitInfo.InRow == false)
            return;

        if (hitInfo.Column == null)
            return;

        //concern only the following fields
        if (hitInfo.Column.FieldName == "Monday" || hitInfo.Column.FieldName == "Tuesday" || hitInfo.Column.FieldName == "Wednesday" || hitInfo.Column.FieldName == "Thursday" || hitInfo.Column.FieldName == "Friday")
            validColumn = true;

        if (!validColumn)
            return;

        string toolTip = string.Empty;
        SuperToolTipSetupArgs toolTipArgs = new SuperToolTipSetupArgs();
        toolTipArgs.Title.Text = string.Empty;

        //Get the data from this row
        string columnCaption = hitInfo.Column.Caption;
        DateTime dateOK = new DateTime(2000,1,1);
        if (DateTime.TryParse(columnCaption, out dateOK))
        {

            DateTime date = DateTime.Parse(columnCaption);
            int row = hitInfo.RowHandle;
            long teacherID = long.Parse(gridView1.GetRowCellValue(row, "TeacherID").ToString());

            GuaranteedDay gDay = db.GuaranteedDays.Where(p => p.Date == date && p.TeacherID == teacherID && p.Type == 5).FirstOrDefault();
            if (gDay != null)
            {
                if (gDay.Note != string.Empty)
                {
                    //Set description for the tool-tip
                    string description = string.Empty;
                    int type = gDay.Type;
                    switch (type)
                    {
                        case 1:
                            description = "guarantee offered";
                            break;
                        case 2:
                            description = "guaranteed";
                            break;
                        case 3:
                            description = "texted";
                            break;
                        case 4:
                            description = "available";
                            break;
                        case 5:
                            description = "unavailable";
                            break;
                    }
                    //Add Notes & description for the tool-tip
                    toolTip = "Notes : " + gDay.Note + "\nDescription : " + description;

                    string BodyText = toolTip;

                    toolTipArgs.Contents.Text = BodyText;
                    e.Info = new ToolTipControlInfo();
                    e.Info.Object = hitInfo.HitTest.ToString() + hitInfo.RowHandle.ToString(); 
                    e.Info.ToolTipType = ToolTipType.SuperTip;
                    e.Info.SuperTip = new SuperToolTip();
                    e.Info.SuperTip.Setup(toolTipArgs);
                }
            }
        }
    }
}

Thanks for helping,
Kushan Randima.
Software Engineer
Davton Ltd

解决方案

e.Info.Object = hitInfo.HitTest.ToString() + hitInfo.RowHandle.ToString() + hitInfo.Column.FieldName; 

Hi,

I changed the code as follows. Now tool-tip is getting refresh for each cell in the grid-view.

e.Info.Object = hitInfo.HitTest.ToString() + hitInfo.RowHandle.ToString() + hitInfo.Column.FieldName; 

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