private void 添加视频ToolStripMenuItem_Click(object sender, EventArgs e)
{
SelectDataForm selectForm = new SelectDataForm("请拖入发送的视频信息（只支持MP4格式）：", "视频");
if (selectForm.ShowDialog() == DialogResult.OK)
{
MessageType type = new MessageType();
type.Id = 0;
type.SendType = "视频";
type.TxtContent = SelectDataForm.returnValue;
BindGrad(type);
}
}
private void 添加文本ToolStripMenuItem_Click(object sender, EventArgs e)
{
SelectDataForm selectForm = new SelectDataForm("请输入要发送的文字信息：", "文本");
if (selectForm.ShowDialog() == DialogResult.OK)
{
MessageType type = new MessageType();
type.Id = 0;
type.SendType = "文本";
type.TxtContent = SelectDataForm.returnValue;
BindGrad(type);
}
}